Home / 8,255.38-12,372.10-7,154.58

Finding the Fourth Proportional to 8,255.38, 12,372.10 and 7,154.58

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Solution

The fourth proportional to 8,255.38, 12,372.10 and 7,154.58 is: 10,722.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,255.38 : 12,372.10 = 7,154.58 : x
  2. Step 2: Convert to fraction form
    8,255.38/12,372.10 = 7,154.58/x
  3. Step 3: Cross multiply
    8,255.38x = 12,372.10 × 7,154.58
  4. Step 4: Simplify right side
    8,255.38x = 88,517,179.22
  5. Step 5: Solve for x
    x = 88,517,179.22/8,255.38
  6. Step 6: Final answer
    x = 10,722.36

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1.5x scale

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.