Home / 3,872.57-5,345.55-2,382.48

Finding the Fourth Proportional to 3,872.57, 5,345.55 and 2,382.48

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Solution

The fourth proportional to 3,872.57, 5,345.55 and 2,382.48 is: 3,288.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.57 : 5,345.55 = 2,382.48 : x
  2. Step 2: Convert to fraction form
    3,872.57/5,345.55 = 2,382.48/x
  3. Step 3: Cross multiply
    3,872.57x = 5,345.55 × 2,382.48
  4. Step 4: Simplify right side
    3,872.57x = 12,735,665.96
  5. Step 5: Solve for x
    x = 12,735,665.96/3,872.57
  6. Step 6: Final answer
    x = 3,288.69

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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.