Home / 2,275.71-3,140.54-1,281.03

Finding the Fourth Proportional to 2,275.71, 3,140.54 and 1,281.03

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Solution

The fourth proportional to 2,275.71, 3,140.54 and 1,281.03 is: 1,767.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.71 : 3,140.54 = 1,281.03 : x
  2. Step 2: Convert to fraction form
    2,275.71/3,140.54 = 1,281.03/x
  3. Step 3: Cross multiply
    2,275.71x = 3,140.54 × 1,281.03
  4. Step 4: Simplify right side
    2,275.71x = 4,023,123.75
  5. Step 5: Solve for x
    x = 4,023,123.75/2,275.71
  6. Step 6: Final answer
    x = 1,767.85

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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.