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Finding the Fourth Proportional to 8,095.60, 12,139.28 and 3,709.28

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Solution

The fourth proportional to 8,095.60, 12,139.28 and 3,709.28 is: 5,562.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,095.60 : 12,139.28 = 3,709.28 : x
  2. Step 2: Convert to fraction form
    8,095.60/12,139.28 = 3,709.28/x
  3. Step 3: Cross multiply
    8,095.60x = 12,139.28 × 3,709.28
  4. Step 4: Simplify right side
    8,095.60x = 45,027,988.52
  5. Step 5: Solve for x
    x = 45,027,988.52/8,095.60
  6. Step 6: Final answer
    x = 5,562.03

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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.