Home / 2,568.44-3,545.78-1,781.12

Finding the Fourth Proportional to 2,568.44, 3,545.78 and 1,781.12

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Solution

The fourth proportional to 2,568.44, 3,545.78 and 1,781.12 is: 2,458.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,568.44 : 3,545.78 = 1,781.12 : x
  2. Step 2: Convert to fraction form
    2,568.44/3,545.78 = 1,781.12/x
  3. Step 3: Cross multiply
    2,568.44x = 3,545.78 × 1,781.12
  4. Step 4: Simplify right side
    2,568.44x = 6,315,433.04
  5. Step 5: Solve for x
    x = 6,315,433.04/2,568.44
  6. Step 6: Final answer
    x = 2,458.86

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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.