Home / 1,177.74-1,757.97-1,131.30

Finding the Fourth Proportional to 1,177.74, 1,757.97 and 1,131.30

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Solution

The fourth proportional to 1,177.74, 1,757.97 and 1,131.30 is: 1,688.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.74 : 1,757.97 = 1,131.30 : x
  2. Step 2: Convert to fraction form
    1,177.74/1,757.97 = 1,131.30/x
  3. Step 3: Cross multiply
    1,177.74x = 1,757.97 × 1,131.30
  4. Step 4: Simplify right side
    1,177.74x = 1,988,791.46
  5. Step 5: Solve for x
    x = 1,988,791.46/1,177.74
  6. Step 6: Final answer
    x = 1,688.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.