Home / 2,568.97-3,545.18-1,390.03

Finding the Fourth Proportional to 2,568.97, 3,545.18 and 1,390.03

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Solution

The fourth proportional to 2,568.97, 3,545.18 and 1,390.03 is: 1,918.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,568.97 : 3,545.18 = 1,390.03 : x
  2. Step 2: Convert to fraction form
    2,568.97/3,545.18 = 1,390.03/x
  3. Step 3: Cross multiply
    2,568.97x = 3,545.18 × 1,390.03
  4. Step 4: Simplify right side
    2,568.97x = 4,927,906.56
  5. Step 5: Solve for x
    x = 4,927,906.56/2,568.97
  6. Step 6: Final answer
    x = 1,918.24

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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.