Home / 1,691.24-2,543.03-1,555.92

Finding the Fourth Proportional to 1,691.24, 2,543.03 and 1,555.92

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Solution

The fourth proportional to 1,691.24, 2,543.03 and 1,555.92 is: 2,339.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.24 : 2,543.03 = 1,555.92 : x
  2. Step 2: Convert to fraction form
    1,691.24/2,543.03 = 1,555.92/x
  3. Step 3: Cross multiply
    1,691.24x = 2,543.03 × 1,555.92
  4. Step 4: Simplify right side
    1,691.24x = 3,956,739.76
  5. Step 5: Solve for x
    x = 3,956,739.76/1,691.24
  6. Step 6: Final answer
    x = 2,339.55

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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.