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Finding the Fourth Proportional to 5,861.76, 8,791.20 and 1,966.08

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Solution

The fourth proportional to 5,861.76, 8,791.20 and 1,966.08 is: 2,948.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,861.76 : 8,791.20 = 1,966.08 : x
  2. Step 2: Convert to fraction form
    5,861.76/8,791.20 = 1,966.08/x
  3. Step 3: Cross multiply
    5,861.76x = 8,791.20 × 1,966.08
  4. Step 4: Simplify right side
    5,861.76x = 17,284,202.50
  5. Step 5: Solve for x
    x = 17,284,202.50/5,861.76
  6. Step 6: Final answer
    x = 2,948.64

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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.