Home / 8,931.75-13,398.50-3,310.91

Finding the Fourth Proportional to 8,931.75, 13,398.50 and 3,310.91

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Solution

The fourth proportional to 8,931.75, 13,398.50 and 3,310.91 is: 4,966.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.75 : 13,398.50 = 3,310.91 : x
  2. Step 2: Convert to fraction form
    8,931.75/13,398.50 = 3,310.91/x
  3. Step 3: Cross multiply
    8,931.75x = 13,398.50 × 3,310.91
  4. Step 4: Simplify right side
    8,931.75x = 44,361,144.09
  5. Step 5: Solve for x
    x = 44,361,144.09/8,931.75
  6. Step 6: Final answer
    x = 4,966.68

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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.