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Finding the Fourth Proportional to 5,260.12, 7,890.18 and 3,307.48

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Solution

The fourth proportional to 5,260.12, 7,890.18 and 3,307.48 is: 4,961.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,260.12 : 7,890.18 = 3,307.48 : x
  2. Step 2: Convert to fraction form
    5,260.12/7,890.18 = 3,307.48/x
  3. Step 3: Cross multiply
    5,260.12x = 7,890.18 × 3,307.48
  4. Step 4: Simplify right side
    5,260.12x = 26,096,612.55
  5. Step 5: Solve for x
    x = 26,096,612.55/5,260.12
  6. Step 6: Final answer
    x = 4,961.22

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.