Home / 7,631.20-11,389.58-7,132.97

Finding the Fourth Proportional to 7,631.20, 11,389.58 and 7,132.97

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Solution

The fourth proportional to 7,631.20, 11,389.58 and 7,132.97 is: 10,645.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,631.20 : 11,389.58 = 7,132.97 : x
  2. Step 2: Convert to fraction form
    7,631.20/11,389.58 = 7,132.97/x
  3. Step 3: Cross multiply
    7,631.20x = 11,389.58 × 7,132.97
  4. Step 4: Simplify right side
    7,631.20x = 81,241,532.45
  5. Step 5: Solve for x
    x = 81,241,532.45/7,631.20
  6. Step 6: Final answer
    x = 10,645.97

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Half scale
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Double scale
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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.