Home / 8,931.87-13,397.67-2,691.81

Finding the Fourth Proportional to 8,931.87, 13,397.67 and 2,691.81

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Solution

The fourth proportional to 8,931.87, 13,397.67 and 2,691.81 is: 4,037.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.87 : 13,397.67 = 2,691.81 : x
  2. Step 2: Convert to fraction form
    8,931.87/13,397.67 = 2,691.81/x
  3. Step 3: Cross multiply
    8,931.87x = 13,397.67 × 2,691.81
  4. Step 4: Simplify right side
    8,931.87x = 36,063,982.08
  5. Step 5: Solve for x
    x = 36,063,982.08/8,931.87
  6. Step 6: Final answer
    x = 4,037.67

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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.