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Finding the Fourth Proportional to 8,230.79, 12,346.79 and 2,387.85

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Solution

The fourth proportional to 8,230.79, 12,346.79 and 2,387.85 is: 3,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,230.79 : 12,346.79 = 2,387.85 : x
  2. Step 2: Convert to fraction form
    8,230.79/12,346.79 = 2,387.85/x
  3. Step 3: Cross multiply
    8,230.79x = 12,346.79 × 2,387.85
  4. Step 4: Simplify right side
    8,230.79x = 29,482,270.56
  5. Step 5: Solve for x
    x = 29,482,270.56/8,230.79
  6. Step 6: Final answer
    x = 3,581.95

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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.