Home / 1,272.55-1,751.85-1,132.45

Finding the Fourth Proportional to 1,272.55, 1,751.85 and 1,132.45

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Solution

The fourth proportional to 1,272.55, 1,751.85 and 1,132.45 is: 1,558.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.55 : 1,751.85 = 1,132.45 : x
  2. Step 2: Convert to fraction form
    1,272.55/1,751.85 = 1,132.45/x
  3. Step 3: Cross multiply
    1,272.55x = 1,751.85 × 1,132.45
  4. Step 4: Simplify right side
    1,272.55x = 1,983,882.53
  5. Step 5: Solve for x
    x = 1,983,882.53/1,272.55
  6. Step 6: Final answer
    x = 1,558.98

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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.