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Finding the Fourth Proportional to 2,221.62, 3,332.81 and 760.42

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Solution

The fourth proportional to 2,221.62, 3,332.81 and 760.42 is: 1,140.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.62 : 3,332.81 = 760.42 : x
  2. Step 2: Convert to fraction form
    2,221.62/3,332.81 = 760.42/x
  3. Step 3: Cross multiply
    2,221.62x = 3,332.81 × 760.42
  4. Step 4: Simplify right side
    2,221.62x = 2,534,335.38
  5. Step 5: Solve for x
    x = 2,534,335.38/2,221.62
  6. Step 6: Final answer
    x = 1,140.76

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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.