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Finding the Fourth Proportional to 8,290.95, 12,432.15 and 2,446.80

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Solution

The fourth proportional to 8,290.95, 12,432.15 and 2,446.80 is: 3,668.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.95 : 12,432.15 = 2,446.80 : x
  2. Step 2: Convert to fraction form
    8,290.95/12,432.15 = 2,446.80/x
  3. Step 3: Cross multiply
    8,290.95x = 12,432.15 × 2,446.80
  4. Step 4: Simplify right side
    8,290.95x = 30,418,984.62
  5. Step 5: Solve for x
    x = 30,418,984.62/8,290.95
  6. Step 6: Final answer
    x = 3,668.94

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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.