Home / 1,540.25-2,123.05-1,203.57

Finding the Fourth Proportional to 1,540.25, 2,123.05 and 1,203.57

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Solution

The fourth proportional to 1,540.25, 2,123.05 and 1,203.57 is: 1,658.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.25 : 2,123.05 = 1,203.57 : x
  2. Step 2: Convert to fraction form
    1,540.25/2,123.05 = 1,203.57/x
  3. Step 3: Cross multiply
    1,540.25x = 2,123.05 × 1,203.57
  4. Step 4: Simplify right side
    1,540.25x = 2,555,228.32
  5. Step 5: Solve for x
    x = 2,555,228.32/1,540.25
  6. Step 6: Final answer
    x = 1,658.97

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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.