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Finding the Fourth Proportional to 5,857.28, 8,764.28 and 3,518.70

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Solution

The fourth proportional to 5,857.28, 8,764.28 and 3,518.70 is: 5,265.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,857.28 : 8,764.28 = 3,518.70 : x
  2. Step 2: Convert to fraction form
    5,857.28/8,764.28 = 3,518.70/x
  3. Step 3: Cross multiply
    5,857.28x = 8,764.28 × 3,518.70
  4. Step 4: Simplify right side
    5,857.28x = 30,838,872.04
  5. Step 5: Solve for x
    x = 30,838,872.04/5,857.28
  6. Step 6: Final answer
    x = 5,265.05

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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.