Home / 8,440.20-12,672.45-5,985.90

Finding the Fourth Proportional to 8,440.20, 12,672.45 and 5,985.90

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Solution

The fourth proportional to 8,440.20, 12,672.45 and 5,985.90 is: 8,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,440.20 : 12,672.45 = 5,985.90 : x
  2. Step 2: Convert to fraction form
    8,440.20/12,672.45 = 5,985.90/x
  3. Step 3: Cross multiply
    8,440.20x = 12,672.45 × 5,985.90
  4. Step 4: Simplify right side
    8,440.20x = 75,856,018.46
  5. Step 5: Solve for x
    x = 75,856,018.46/8,440.20
  6. Step 6: Final answer
    x = 8,987.47

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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.