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Finding the Fourth Proportional to 8,539.59, 12,809.97 and 2,992.29

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Solution

The fourth proportional to 8,539.59, 12,809.97 and 2,992.29 is: 4,488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.59 : 12,809.97 = 2,992.29 : x
  2. Step 2: Convert to fraction form
    8,539.59/12,809.97 = 2,992.29/x
  3. Step 3: Cross multiply
    8,539.59x = 12,809.97 × 2,992.29
  4. Step 4: Simplify right side
    8,539.59x = 38,331,145.13
  5. Step 5: Solve for x
    x = 38,331,145.13/8,539.59
  6. Step 6: Final answer
    x = 4,488.64

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1.5x scale

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.