Home / 1,271.27-1,763.33-1,237.55

Finding the Fourth Proportional to 1,271.27, 1,763.33 and 1,237.55

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Solution

The fourth proportional to 1,271.27, 1,763.33 and 1,237.55 is: 1,716.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.27 : 1,763.33 = 1,237.55 : x
  2. Step 2: Convert to fraction form
    1,271.27/1,763.33 = 1,237.55/x
  3. Step 3: Cross multiply
    1,271.27x = 1,763.33 × 1,237.55
  4. Step 4: Simplify right side
    1,271.27x = 2,182,209.04
  5. Step 5: Solve for x
    x = 2,182,209.04/1,271.27
  6. Step 6: Final answer
    x = 1,716.56

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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.