Home / 1,555.62-2,149.11-1,161.96

Finding the Fourth Proportional to 1,555.62, 2,149.11 and 1,161.96

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Solution

The fourth proportional to 1,555.62, 2,149.11 and 1,161.96 is: 1,605.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.62 : 2,149.11 = 1,161.96 : x
  2. Step 2: Convert to fraction form
    1,555.62/2,149.11 = 1,161.96/x
  3. Step 3: Cross multiply
    1,555.62x = 2,149.11 × 1,161.96
  4. Step 4: Simplify right side
    1,555.62x = 2,497,179.86
  5. Step 5: Solve for x
    x = 2,497,179.86/1,555.62
  6. Step 6: Final answer
    x = 1,605.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.