Home / 2,868.68-3,959.44-1,872.20

Finding the Fourth Proportional to 2,868.68, 3,959.44 and 1,872.20

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Solution

The fourth proportional to 2,868.68, 3,959.44 and 1,872.20 is: 2,584.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.68 : 3,959.44 = 1,872.20 : x
  2. Step 2: Convert to fraction form
    2,868.68/3,959.44 = 1,872.20/x
  3. Step 3: Cross multiply
    2,868.68x = 3,959.44 × 1,872.20
  4. Step 4: Simplify right side
    2,868.68x = 7,412,863.57
  5. Step 5: Solve for x
    x = 7,412,863.57/2,868.68
  6. Step 6: Final answer
    x = 2,584.07

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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.