Home / 2,270.40-3,132.96-1,275.60

Finding the Fourth Proportional to 2,270.40, 3,132.96 and 1,275.60

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Solution

The fourth proportional to 2,270.40, 3,132.96 and 1,275.60 is: 1,760.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,270.40 : 3,132.96 = 1,275.60 : x
  2. Step 2: Convert to fraction form
    2,270.40/3,132.96 = 1,275.60/x
  3. Step 3: Cross multiply
    2,270.40x = 3,132.96 × 1,275.60
  4. Step 4: Simplify right side
    2,270.40x = 3,996,403.78
  5. Step 5: Solve for x
    x = 3,996,403.78/2,270.40
  6. Step 6: Final answer
    x = 1,760.22

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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.