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Finding the Fourth Proportional to 5,561.52, 8,341.65 and 1,665

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Solution

The fourth proportional to 5,561.52, 8,341.65 and 1,665 is: 2,497.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,561.52 : 8,341.65 = 1,665 : x
  2. Step 2: Convert to fraction form
    5,561.52/8,341.65 = 1,665/x
  3. Step 3: Cross multiply
    5,561.52x = 8,341.65 × 1,665
  4. Step 4: Simplify right side
    5,561.52x = 13,888,847.25
  5. Step 5: Solve for x
    x = 13,888,847.25/5,561.52
  6. Step 6: Final answer
    x = 2,497.31

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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.