Home / 8,535.12-12,805.98-2,989.08

Finding the Fourth Proportional to 8,535.12, 12,805.98 and 2,989.08

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Solution

The fourth proportional to 8,535.12, 12,805.98 and 2,989.08 is: 4,484.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,535.12 : 12,805.98 = 2,989.08 : x
  2. Step 2: Convert to fraction form
    8,535.12/12,805.98 = 2,989.08/x
  3. Step 3: Cross multiply
    8,535.12x = 12,805.98 × 2,989.08
  4. Step 4: Simplify right side
    8,535.12x = 38,278,098.70
  5. Step 5: Solve for x
    x = 38,278,098.70/8,535.12
  6. Step 6: Final answer
    x = 4,484.78

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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.