Home / 1,491.90-2,233.74-1,125.57

Finding the Fourth Proportional to 1,491.90, 2,233.74 and 1,125.57

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Solution

The fourth proportional to 1,491.90, 2,233.74 and 1,125.57 is: 1,685.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.90 : 2,233.74 = 1,125.57 : x
  2. Step 2: Convert to fraction form
    1,491.90/2,233.74 = 1,125.57/x
  3. Step 3: Cross multiply
    1,491.90x = 2,233.74 × 1,125.57
  4. Step 4: Simplify right side
    1,491.90x = 2,514,243.33
  5. Step 5: Solve for x
    x = 2,514,243.33/1,491.90
  6. Step 6: Final answer
    x = 1,685.27

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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.