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Finding the Fourth Proportional to 8,659.38, 12,988.35 and 3,465.54

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Solution

The fourth proportional to 8,659.38, 12,988.35 and 3,465.54 is: 5,198.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.38 : 12,988.35 = 3,465.54 : x
  2. Step 2: Convert to fraction form
    8,659.38/12,988.35 = 3,465.54/x
  3. Step 3: Cross multiply
    8,659.38x = 12,988.35 × 3,465.54
  4. Step 4: Simplify right side
    8,659.38x = 45,011,646.46
  5. Step 5: Solve for x
    x = 45,011,646.46/8,659.38
  6. Step 6: Final answer
    x = 5,198.02

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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.