Home / 8,909.82-13,358.58-3,909.80

Finding the Fourth Proportional to 8,909.82, 13,358.58 and 3,909.80

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Solution

The fourth proportional to 8,909.82, 13,358.58 and 3,909.80 is: 5,862.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.82 : 13,358.58 = 3,909.80 : x
  2. Step 2: Convert to fraction form
    8,909.82/13,358.58 = 3,909.80/x
  3. Step 3: Cross multiply
    8,909.82x = 13,358.58 × 3,909.80
  4. Step 4: Simplify right side
    8,909.82x = 52,229,376.08
  5. Step 5: Solve for x
    x = 52,229,376.08/8,909.82
  6. Step 6: Final answer
    x = 5,862.00

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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.