Home / 8,158.87-12,238.61-2,612.40

Finding the Fourth Proportional to 8,158.87, 12,238.61 and 2,612.40

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Solution

The fourth proportional to 8,158.87, 12,238.61 and 2,612.40 is: 3,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,158.87 : 12,238.61 = 2,612.40 : x
  2. Step 2: Convert to fraction form
    8,158.87/12,238.61 = 2,612.40/x
  3. Step 3: Cross multiply
    8,158.87x = 12,238.61 × 2,612.40
  4. Step 4: Simplify right side
    8,158.87x = 31,972,144.76
  5. Step 5: Solve for x
    x = 31,972,144.76/8,158.87
  6. Step 6: Final answer
    x = 3,918.70

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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.