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Finding the Fourth Proportional to 2,221.62, 3,331.14 and 760.38

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Solution

The fourth proportional to 2,221.62, 3,331.14 and 760.38 is: 1,140.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.62 : 3,331.14 = 760.38 : x
  2. Step 2: Convert to fraction form
    2,221.62/3,331.14 = 760.38/x
  3. Step 3: Cross multiply
    2,221.62x = 3,331.14 × 760.38
  4. Step 4: Simplify right side
    2,221.62x = 2,532,932.23
  5. Step 5: Solve for x
    x = 2,532,932.23/2,221.62
  6. Step 6: Final answer
    x = 1,140.13

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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.