Home / 1,374.18-2,061.39-400.38

Finding the Fourth Proportional to 1,374.18, 2,061.39 and 400.38

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Solution

The fourth proportional to 1,374.18, 2,061.39 and 400.38 is: 600.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,374.18 : 2,061.39 = 400.38 : x
  2. Step 2: Convert to fraction form
    1,374.18/2,061.39 = 400.38/x
  3. Step 3: Cross multiply
    1,374.18x = 2,061.39 × 400.38
  4. Step 4: Simplify right side
    1,374.18x = 825,339.33
  5. Step 5: Solve for x
    x = 825,339.33/1,374.18
  6. Step 6: Final answer
    x = 600.60

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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.