Home / 8,649.20-12,974.52-2,805.92

Finding the Fourth Proportional to 8,649.20, 12,974.52 and 2,805.92

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Solution

The fourth proportional to 8,649.20, 12,974.52 and 2,805.92 is: 4,209.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.20 : 12,974.52 = 2,805.92 : x
  2. Step 2: Convert to fraction form
    8,649.20/12,974.52 = 2,805.92/x
  3. Step 3: Cross multiply
    8,649.20x = 12,974.52 × 2,805.92
  4. Step 4: Simplify right side
    8,649.20x = 36,405,465.16
  5. Step 5: Solve for x
    x = 36,405,465.16/8,649.20
  6. Step 6: Final answer
    x = 4,209.11

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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.