Home / 2,255.85-3,113.02-1,247.55

Finding the Fourth Proportional to 2,255.85, 3,113.02 and 1,247.55

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Solution

The fourth proportional to 2,255.85, 3,113.02 and 1,247.55 is: 1,721.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.85 : 3,113.02 = 1,247.55 : x
  2. Step 2: Convert to fraction form
    2,255.85/3,113.02 = 1,247.55/x
  3. Step 3: Cross multiply
    2,255.85x = 3,113.02 × 1,247.55
  4. Step 4: Simplify right side
    2,255.85x = 3,883,626.30
  5. Step 5: Solve for x
    x = 3,883,626.30/2,255.85
  6. Step 6: Final answer
    x = 1,721.58

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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.