Home / 2,931.38-4,397.21-1,631.87

Finding the Fourth Proportional to 2,931.38, 4,397.21 and 1,631.87

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Solution

The fourth proportional to 2,931.38, 4,397.21 and 1,631.87 is: 2,447.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.38 : 4,397.21 = 1,631.87 : x
  2. Step 2: Convert to fraction form
    2,931.38/4,397.21 = 1,631.87/x
  3. Step 3: Cross multiply
    2,931.38x = 4,397.21 × 1,631.87
  4. Step 4: Simplify right side
    2,931.38x = 7,175,666.92
  5. Step 5: Solve for x
    x = 7,175,666.92/2,931.38
  6. Step 6: Final answer
    x = 2,447.88

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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.