Home / 2,871.87-4,278.92-2,683.25

Finding the Fourth Proportional to 2,871.87, 4,278.92 and 2,683.25

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Solution

The fourth proportional to 2,871.87, 4,278.92 and 2,683.25 is: 3,997.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.87 : 4,278.92 = 2,683.25 : x
  2. Step 2: Convert to fraction form
    2,871.87/4,278.92 = 2,683.25/x
  3. Step 3: Cross multiply
    2,871.87x = 4,278.92 × 2,683.25
  4. Step 4: Simplify right side
    2,871.87x = 11,481,397.40
  5. Step 5: Solve for x
    x = 11,481,397.40/2,871.87
  6. Step 6: Final answer
    x = 3,997.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.