Home / 2,380.92-3,280.78-2,144.40

Finding the Fourth Proportional to 2,380.92, 3,280.78 and 2,144.40

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Solution

The fourth proportional to 2,380.92, 3,280.78 and 2,144.40 is: 2,954.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.92 : 3,280.78 = 2,144.40 : x
  2. Step 2: Convert to fraction form
    2,380.92/3,280.78 = 2,144.40/x
  3. Step 3: Cross multiply
    2,380.92x = 3,280.78 × 2,144.40
  4. Step 4: Simplify right side
    2,380.92x = 7,035,304.63
  5. Step 5: Solve for x
    x = 7,035,304.63/2,380.92
  6. Step 6: Final answer
    x = 2,954.87

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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.