Home / 1,101.24-1,515.57-1,012.75

Finding the Fourth Proportional to 1,101.24, 1,515.57 and 1,012.75

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Solution

The fourth proportional to 1,101.24, 1,515.57 and 1,012.75 is: 1,393.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.24 : 1,515.57 = 1,012.75 : x
  2. Step 2: Convert to fraction form
    1,101.24/1,515.57 = 1,012.75/x
  3. Step 3: Cross multiply
    1,101.24x = 1,515.57 × 1,012.75
  4. Step 4: Simplify right side
    1,101.24x = 1,534,885.94
  5. Step 5: Solve for x
    x = 1,534,885.94/1,101.24
  6. Step 6: Final answer
    x = 1,393.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.