Home / 8,931.92-13,398.46-2,691.68

Finding the Fourth Proportional to 8,931.92, 13,398.46 and 2,691.68

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Solution

The fourth proportional to 8,931.92, 13,398.46 and 2,691.68 is: 4,037.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.92 : 13,398.46 = 2,691.68 : x
  2. Step 2: Convert to fraction form
    8,931.92/13,398.46 = 2,691.68/x
  3. Step 3: Cross multiply
    8,931.92x = 13,398.46 × 2,691.68
  4. Step 4: Simplify right side
    8,931.92x = 36,064,366.81
  5. Step 5: Solve for x
    x = 36,064,366.81/8,931.92
  6. Step 6: Final answer
    x = 4,037.69

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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.