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Finding the Fourth Proportional to 8,538.22, 12,799.51 and 7,230.39

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Solution

The fourth proportional to 8,538.22, 12,799.51 and 7,230.39 is: 10,838.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.22 : 12,799.51 = 7,230.39 : x
  2. Step 2: Convert to fraction form
    8,538.22/12,799.51 = 7,230.39/x
  3. Step 3: Cross multiply
    8,538.22x = 12,799.51 × 7,230.39
  4. Step 4: Simplify right side
    8,538.22x = 92,545,449.11
  5. Step 5: Solve for x
    x = 92,545,449.11/8,538.22
  6. Step 6: Final answer
    x = 10,838.96

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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.