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Finding the Fourth Proportional to 8,679.01, 13,001.17 and 3,992.59

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Solution

The fourth proportional to 8,679.01, 13,001.17 and 3,992.59 is: 5,980.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.01 : 13,001.17 = 3,992.59 : x
  2. Step 2: Convert to fraction form
    8,679.01/13,001.17 = 3,992.59/x
  3. Step 3: Cross multiply
    8,679.01x = 13,001.17 × 3,992.59
  4. Step 4: Simplify right side
    8,679.01x = 51,908,343.86
  5. Step 5: Solve for x
    x = 51,908,343.86/8,679.01
  6. Step 6: Final answer
    x = 5,980.91

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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.