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Finding the Fourth Proportional to 8,758.60, 13,126.95 and 4,377.28

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Solution

The fourth proportional to 8,758.60, 13,126.95 and 4,377.28 is: 6,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.60 : 13,126.95 = 4,377.28 : x
  2. Step 2: Convert to fraction form
    8,758.60/13,126.95 = 4,377.28/x
  3. Step 3: Cross multiply
    8,758.60x = 13,126.95 × 4,377.28
  4. Step 4: Simplify right side
    8,758.60x = 57,460,335.70
  5. Step 5: Solve for x
    x = 57,460,335.70/8,758.60
  6. Step 6: Final answer
    x = 6,560.45

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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.