Home / 2,560.38-3,843.81-2,178.06

Finding the Fourth Proportional to 2,560.38, 3,843.81 and 2,178.06

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Solution

The fourth proportional to 2,560.38, 3,843.81 and 2,178.06 is: 3,269.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,560.38 : 3,843.81 = 2,178.06 : x
  2. Step 2: Convert to fraction form
    2,560.38/3,843.81 = 2,178.06/x
  3. Step 3: Cross multiply
    2,560.38x = 3,843.81 × 2,178.06
  4. Step 4: Simplify right side
    2,560.38x = 8,372,048.81
  5. Step 5: Solve for x
    x = 8,372,048.81/2,560.38
  6. Step 6: Final answer
    x = 3,269.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.