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Finding the Fourth Proportional to 8,620.04, 12,930.12 and 3,073.61

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Solution

The fourth proportional to 8,620.04, 12,930.12 and 3,073.61 is: 4,610.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.04 : 12,930.12 = 3,073.61 : x
  2. Step 2: Convert to fraction form
    8,620.04/12,930.12 = 3,073.61/x
  3. Step 3: Cross multiply
    8,620.04x = 12,930.12 × 3,073.61
  4. Step 4: Simplify right side
    8,620.04x = 39,742,146.13
  5. Step 5: Solve for x
    x = 39,742,146.13/8,620.04
  6. Step 6: Final answer
    x = 4,610.44

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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.