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Finding the Fourth Proportional to 8,159.44, 12,239.16 and 2,315.30

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Solution

The fourth proportional to 8,159.44, 12,239.16 and 2,315.30 is: 3,472.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,159.44 : 12,239.16 = 2,315.30 : x
  2. Step 2: Convert to fraction form
    8,159.44/12,239.16 = 2,315.30/x
  3. Step 3: Cross multiply
    8,159.44x = 12,239.16 × 2,315.30
  4. Step 4: Simplify right side
    8,159.44x = 28,337,327.15
  5. Step 5: Solve for x
    x = 28,337,327.15/8,159.44
  6. Step 6: Final answer
    x = 3,472.95

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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.