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Finding the Fourth Proportional to 8,734.40, 13,101.60 and 4,126.40

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Solution

The fourth proportional to 8,734.40, 13,101.60 and 4,126.40 is: 6,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,734.40 : 13,101.60 = 4,126.40 : x
  2. Step 2: Convert to fraction form
    8,734.40/13,101.60 = 4,126.40/x
  3. Step 3: Cross multiply
    8,734.40x = 13,101.60 × 4,126.40
  4. Step 4: Simplify right side
    8,734.40x = 54,062,442.24
  5. Step 5: Solve for x
    x = 54,062,442.24/8,734.40
  6. Step 6: Final answer
    x = 6,189.60

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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.