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Finding the Fourth Proportional to 8,480.55, 12,718.77 and 3,553.88

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Solution

The fourth proportional to 8,480.55, 12,718.77 and 3,553.88 is: 5,329.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.55 : 12,718.77 = 3,553.88 : x
  2. Step 2: Convert to fraction form
    8,480.55/12,718.77 = 3,553.88/x
  3. Step 3: Cross multiply
    8,480.55x = 12,718.77 × 3,553.88
  4. Step 4: Simplify right side
    8,480.55x = 45,200,925.40
  5. Step 5: Solve for x
    x = 45,200,925.40/8,480.55
  6. Step 6: Final answer
    x = 5,329.95

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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.