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Finding the Fourth Proportional to 7,472.98, 11,209.47 and 2,278.86

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Solution

The fourth proportional to 7,472.98, 11,209.47 and 2,278.86 is: 3,418.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.98 : 11,209.47 = 2,278.86 : x
  2. Step 2: Convert to fraction form
    7,472.98/11,209.47 = 2,278.86/x
  3. Step 3: Cross multiply
    7,472.98x = 11,209.47 × 2,278.86
  4. Step 4: Simplify right side
    7,472.98x = 25,544,812.80
  5. Step 5: Solve for x
    x = 25,544,812.80/7,472.98
  6. Step 6: Final answer
    x = 3,418.29

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.