Home / 7,557.44-11,280.68-7,000.78

Finding the Fourth Proportional to 7,557.44, 11,280.68 and 7,000.78

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Solution

The fourth proportional to 7,557.44, 11,280.68 and 7,000.78 is: 10,449.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,557.44 : 11,280.68 = 7,000.78 : x
  2. Step 2: Convert to fraction form
    7,557.44/11,280.68 = 7,000.78/x
  3. Step 3: Cross multiply
    7,557.44x = 11,280.68 × 7,000.78
  4. Step 4: Simplify right side
    7,557.44x = 78,973,582.51
  5. Step 5: Solve for x
    x = 78,973,582.51/7,557.44
  6. Step 6: Final answer
    x = 10,449.79

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.