Home / 2,275.74-3,140.46-1,281.03

Finding the Fourth Proportional to 2,275.74, 3,140.46 and 1,281.03

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Solution

The fourth proportional to 2,275.74, 3,140.46 and 1,281.03 is: 1,767.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.74 : 3,140.46 = 1,281.03 : x
  2. Step 2: Convert to fraction form
    2,275.74/3,140.46 = 1,281.03/x
  3. Step 3: Cross multiply
    2,275.74x = 3,140.46 × 1,281.03
  4. Step 4: Simplify right side
    2,275.74x = 4,023,023.47
  5. Step 5: Solve for x
    x = 4,023,023.47/2,275.74
  6. Step 6: Final answer
    x = 1,767.79

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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.