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Finding the Fourth Proportional to 8,920.53, 13,380.95 and 3,376.49

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Solution

The fourth proportional to 8,920.53, 13,380.95 and 3,376.49 is: 5,064.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.53 : 13,380.95 = 3,376.49 : x
  2. Step 2: Convert to fraction form
    8,920.53/13,380.95 = 3,376.49/x
  3. Step 3: Cross multiply
    8,920.53x = 13,380.95 × 3,376.49
  4. Step 4: Simplify right side
    8,920.53x = 45,180,560.08
  5. Step 5: Solve for x
    x = 45,180,560.08/8,920.53
  6. Step 6: Final answer
    x = 5,064.78

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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.