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Finding the Fourth Proportional to 8,378.72, 12,568.08 and 3,444.90

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Solution

The fourth proportional to 8,378.72, 12,568.08 and 3,444.90 is: 5,167.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.72 : 12,568.08 = 3,444.90 : x
  2. Step 2: Convert to fraction form
    8,378.72/12,568.08 = 3,444.90/x
  3. Step 3: Cross multiply
    8,378.72x = 12,568.08 × 3,444.90
  4. Step 4: Simplify right side
    8,378.72x = 43,295,778.79
  5. Step 5: Solve for x
    x = 43,295,778.79/8,378.72
  6. Step 6: Final answer
    x = 5,167.35

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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.