Home / 5,538.80-8,305.35-1,642.70

Finding the Fourth Proportional to 5,538.80, 8,305.35 and 1,642.70

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Solution

The fourth proportional to 5,538.80, 8,305.35 and 1,642.70 is: 2,463.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,538.80 : 8,305.35 = 1,642.70 : x
  2. Step 2: Convert to fraction form
    5,538.80/8,305.35 = 1,642.70/x
  3. Step 3: Cross multiply
    5,538.80x = 8,305.35 × 1,642.70
  4. Step 4: Simplify right side
    5,538.80x = 13,643,198.45
  5. Step 5: Solve for x
    x = 13,643,198.45/5,538.80
  6. Step 6: Final answer
    x = 2,463.20

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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.