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Finding the Fourth Proportional to 8,201.70, 12,302.55 and 7,308.90

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Solution

The fourth proportional to 8,201.70, 12,302.55 and 7,308.90 is: 10,963.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,201.70 : 12,302.55 = 7,308.90 : x
  2. Step 2: Convert to fraction form
    8,201.70/12,302.55 = 7,308.90/x
  3. Step 3: Cross multiply
    8,201.70x = 12,302.55 × 7,308.90
  4. Step 4: Simplify right side
    8,201.70x = 89,918,107.70
  5. Step 5: Solve for x
    x = 89,918,107.70/8,201.70
  6. Step 6: Final answer
    x = 10,963.35

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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.