Home / 1,605.74-2,207.42-1,380.85

Finding the Fourth Proportional to 1,605.74, 2,207.42 and 1,380.85

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Solution

The fourth proportional to 1,605.74, 2,207.42 and 1,380.85 is: 1,898.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.74 : 2,207.42 = 1,380.85 : x
  2. Step 2: Convert to fraction form
    1,605.74/2,207.42 = 1,380.85/x
  3. Step 3: Cross multiply
    1,605.74x = 2,207.42 × 1,380.85
  4. Step 4: Simplify right side
    1,605.74x = 3,048,109.00
  5. Step 5: Solve for x
    x = 3,048,109.00/1,605.74
  6. Step 6: Final answer
    x = 1,898.26

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.