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Finding the Fourth Proportional to 8,543.80, 12,815.90 and 3,003.52

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Solution

The fourth proportional to 8,543.80, 12,815.90 and 3,003.52 is: 4,505.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.80 : 12,815.90 = 3,003.52 : x
  2. Step 2: Convert to fraction form
    8,543.80/12,815.90 = 3,003.52/x
  3. Step 3: Cross multiply
    8,543.80x = 12,815.90 × 3,003.52
  4. Step 4: Simplify right side
    8,543.80x = 38,492,811.97
  5. Step 5: Solve for x
    x = 38,492,811.97/8,543.80
  6. Step 6: Final answer
    x = 4,505.35

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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.