Home / 8,777.20-13,165.80-7,125.88

Finding the Fourth Proportional to 8,777.20, 13,165.80 and 7,125.88

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Solution

The fourth proportional to 8,777.20, 13,165.80 and 7,125.88 is: 10,688.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.20 : 13,165.80 = 7,125.88 : x
  2. Step 2: Convert to fraction form
    8,777.20/13,165.80 = 7,125.88/x
  3. Step 3: Cross multiply
    8,777.20x = 13,165.80 × 7,125.88
  4. Step 4: Simplify right side
    8,777.20x = 93,817,910.90
  5. Step 5: Solve for x
    x = 93,817,910.90/8,777.20
  6. Step 6: Final answer
    x = 10,688.82

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Similar ratio
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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.