Home / 8,931.74-13,399.70-2,691.50

Finding the Fourth Proportional to 8,931.74, 13,399.70 and 2,691.50

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Solution

The fourth proportional to 8,931.74, 13,399.70 and 2,691.50 is: 4,037.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.74 : 13,399.70 = 2,691.50 : x
  2. Step 2: Convert to fraction form
    8,931.74/13,399.70 = 2,691.50/x
  3. Step 3: Cross multiply
    8,931.74x = 13,399.70 × 2,691.50
  4. Step 4: Simplify right side
    8,931.74x = 36,065,212.09
  5. Step 5: Solve for x
    x = 36,065,212.09/8,931.74
  6. Step 6: Final answer
    x = 4,037.87

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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.