Home / 3,139.76-4,324.55-2,340.53

Finding the Fourth Proportional to 3,139.76, 4,324.55 and 2,340.53

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Solution

The fourth proportional to 3,139.76, 4,324.55 and 2,340.53 is: 3,223.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.76 : 4,324.55 = 2,340.53 : x
  2. Step 2: Convert to fraction form
    3,139.76/4,324.55 = 2,340.53/x
  3. Step 3: Cross multiply
    3,139.76x = 4,324.55 × 2,340.53
  4. Step 4: Simplify right side
    3,139.76x = 10,121,717.39
  5. Step 5: Solve for x
    x = 10,121,717.39/3,139.76
  6. Step 6: Final answer
    x = 3,223.72

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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.