Home / 6,612.78-9,115.56-5,284.38

Finding the Fourth Proportional to 6,612.78, 9,115.56 and 5,284.38

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Solution

The fourth proportional to 6,612.78, 9,115.56 and 5,284.38 is: 7,284.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.78 : 9,115.56 = 5,284.38 : x
  2. Step 2: Convert to fraction form
    6,612.78/9,115.56 = 5,284.38/x
  3. Step 3: Cross multiply
    6,612.78x = 9,115.56 × 5,284.38
  4. Step 4: Simplify right side
    6,612.78x = 48,170,082.95
  5. Step 5: Solve for x
    x = 48,170,082.95/6,612.78
  6. Step 6: Final answer
    x = 7,284.39

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Find fourth proportional to 3,306.39, 4,557.78 and 2,642.19
Half scale
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Double scale
Find fourth proportional to 6,613.78, 9,116.94 and 5,285.38
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.