Home / 2,255.27-3,112.38-1,247.04

Finding the Fourth Proportional to 2,255.27, 3,112.38 and 1,247.04

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Solution

The fourth proportional to 2,255.27, 3,112.38 and 1,247.04 is: 1,720.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.27 : 3,112.38 = 1,247.04 : x
  2. Step 2: Convert to fraction form
    2,255.27/3,112.38 = 1,247.04/x
  3. Step 3: Cross multiply
    2,255.27x = 3,112.38 × 1,247.04
  4. Step 4: Simplify right side
    2,255.27x = 3,881,262.36
  5. Step 5: Solve for x
    x = 3,881,262.36/2,255.27
  6. Step 6: Final answer
    x = 1,720.98

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1.5x scale

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.