Home / 1,225.38-1,837.90-403.56

Finding the Fourth Proportional to 1,225.38, 1,837.90 and 403.56

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Solution

The fourth proportional to 1,225.38, 1,837.90 and 403.56 is: 605.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.38 : 1,837.90 = 403.56 : x
  2. Step 2: Convert to fraction form
    1,225.38/1,837.90 = 403.56/x
  3. Step 3: Cross multiply
    1,225.38x = 1,837.90 × 403.56
  4. Step 4: Simplify right side
    1,225.38x = 741,702.92
  5. Step 5: Solve for x
    x = 741,702.92/1,225.38
  6. Step 6: Final answer
    x = 605.28

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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.