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Finding the Fourth Proportional to 5,672.40, 8,508.60 and 2,207.40

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Solution

The fourth proportional to 5,672.40, 8,508.60 and 2,207.40 is: 3,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,672.40 : 8,508.60 = 2,207.40 : x
  2. Step 2: Convert to fraction form
    5,672.40/8,508.60 = 2,207.40/x
  3. Step 3: Cross multiply
    5,672.40x = 8,508.60 × 2,207.40
  4. Step 4: Simplify right side
    5,672.40x = 18,781,883.64
  5. Step 5: Solve for x
    x = 18,781,883.64/5,672.40
  6. Step 6: Final answer
    x = 3,311.10

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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.