Home / 1,112.14-1,668.25-562.78

Finding the Fourth Proportional to 1,112.14, 1,668.25 and 562.78

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Solution

The fourth proportional to 1,112.14, 1,668.25 and 562.78 is: 844.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.14 : 1,668.25 = 562.78 : x
  2. Step 2: Convert to fraction form
    1,112.14/1,668.25 = 562.78/x
  3. Step 3: Cross multiply
    1,112.14x = 1,668.25 × 562.78
  4. Step 4: Simplify right side
    1,112.14x = 938,857.74
  5. Step 5: Solve for x
    x = 938,857.74/1,112.14
  6. Step 6: Final answer
    x = 844.19

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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.