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Finding the Fourth Proportional to 5,481, 8,221.50 and 1,585.44

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Solution

The fourth proportional to 5,481, 8,221.50 and 1,585.44 is: 2,378.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481 : 8,221.50 = 1,585.44 : x
  2. Step 2: Convert to fraction form
    5,481/8,221.50 = 1,585.44/x
  3. Step 3: Cross multiply
    5,481x = 8,221.50 × 1,585.44
  4. Step 4: Simplify right side
    5,481x = 13,034,694.96
  5. Step 5: Solve for x
    x = 13,034,694.96/5,481
  6. Step 6: Final answer
    x = 2,378.16

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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.