Home / 1,175.13-1,629.11-1,112.72

Finding the Fourth Proportional to 1,175.13, 1,629.11 and 1,112.72

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Solution

The fourth proportional to 1,175.13, 1,629.11 and 1,112.72 is: 1,542.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.13 : 1,629.11 = 1,112.72 : x
  2. Step 2: Convert to fraction form
    1,175.13/1,629.11 = 1,112.72/x
  3. Step 3: Cross multiply
    1,175.13x = 1,629.11 × 1,112.72
  4. Step 4: Simplify right side
    1,175.13x = 1,812,729.57
  5. Step 5: Solve for x
    x = 1,812,729.57/1,175.13
  6. Step 6: Final answer
    x = 1,542.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.