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Finding the Fourth Proportional to 5,555.80, 8,331.24 and 1,659.48

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Solution

The fourth proportional to 5,555.80, 8,331.24 and 1,659.48 is: 2,488.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,555.80 : 8,331.24 = 1,659.48 : x
  2. Step 2: Convert to fraction form
    5,555.80/8,331.24 = 1,659.48/x
  3. Step 3: Cross multiply
    5,555.80x = 8,331.24 × 1,659.48
  4. Step 4: Simplify right side
    5,555.80x = 13,825,526.16
  5. Step 5: Solve for x
    x = 13,825,526.16/5,555.80
  6. Step 6: Final answer
    x = 2,488.49

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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.