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Finding the Fourth Proportional to 5,471.70, 8,207.55 and 3,503.40

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Solution

The fourth proportional to 5,471.70, 8,207.55 and 3,503.40 is: 5,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,471.70 : 8,207.55 = 3,503.40 : x
  2. Step 2: Convert to fraction form
    5,471.70/8,207.55 = 3,503.40/x
  3. Step 3: Cross multiply
    5,471.70x = 8,207.55 × 3,503.40
  4. Step 4: Simplify right side
    5,471.70x = 28,754,330.67
  5. Step 5: Solve for x
    x = 28,754,330.67/5,471.70
  6. Step 6: Final answer
    x = 5,255.10

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Similar ratio
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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.