Home / 2,270.28-3,132.86-1,275.60

Finding the Fourth Proportional to 2,270.28, 3,132.86 and 1,275.60

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Solution

The fourth proportional to 2,270.28, 3,132.86 and 1,275.60 is: 1,760.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,270.28 : 3,132.86 = 1,275.60 : x
  2. Step 2: Convert to fraction form
    2,270.28/3,132.86 = 1,275.60/x
  3. Step 3: Cross multiply
    2,270.28x = 3,132.86 × 1,275.60
  4. Step 4: Simplify right side
    2,270.28x = 3,996,276.22
  5. Step 5: Solve for x
    x = 3,996,276.22/2,270.28
  6. Step 6: Final answer
    x = 1,760.26

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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.