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Finding the Fourth Proportional to 8,993.20, 12,397.08 and 7,000.24

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Solution

The fourth proportional to 8,993.20, 12,397.08 and 7,000.24 is: 9,649.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,993.20 : 12,397.08 = 7,000.24 : x
  2. Step 2: Convert to fraction form
    8,993.20/12,397.08 = 7,000.24/x
  3. Step 3: Cross multiply
    8,993.20x = 12,397.08 × 7,000.24
  4. Step 4: Simplify right side
    8,993.20x = 86,782,535.30
  5. Step 5: Solve for x
    x = 86,782,535.30/8,993.20
  6. Step 6: Final answer
    x = 9,649.79

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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.