Home / 1,515.43-2,272.13-1,223.29

Finding the Fourth Proportional to 1,515.43, 2,272.13 and 1,223.29

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Solution

The fourth proportional to 1,515.43, 2,272.13 and 1,223.29 is: 1,834.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.43 : 2,272.13 = 1,223.29 : x
  2. Step 2: Convert to fraction form
    1,515.43/2,272.13 = 1,223.29/x
  3. Step 3: Cross multiply
    1,515.43x = 2,272.13 × 1,223.29
  4. Step 4: Simplify right side
    1,515.43x = 2,779,456.43
  5. Step 5: Solve for x
    x = 2,779,456.43/1,515.43
  6. Step 6: Final answer
    x = 1,834.11

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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.