Home / 8,997.20-12,390.60-7,729.04

Finding the Fourth Proportional to 8,997.20, 12,390.60 and 7,729.04

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Solution

The fourth proportional to 8,997.20, 12,390.60 and 7,729.04 is: 10,644.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,997.20 : 12,390.60 = 7,729.04 : x
  2. Step 2: Convert to fraction form
    8,997.20/12,390.60 = 7,729.04/x
  3. Step 3: Cross multiply
    8,997.20x = 12,390.60 × 7,729.04
  4. Step 4: Simplify right side
    8,997.20x = 95,767,443.02
  5. Step 5: Solve for x
    x = 95,767,443.02/8,997.20
  6. Step 6: Final answer
    x = 10,644.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.