Home / 2,376.71-3,278.49-1,381.86

Finding the Fourth Proportional to 2,376.71, 3,278.49 and 1,381.86

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Solution

The fourth proportional to 2,376.71, 3,278.49 and 1,381.86 is: 1,906.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,376.71 : 3,278.49 = 1,381.86 : x
  2. Step 2: Convert to fraction form
    2,376.71/3,278.49 = 1,381.86/x
  3. Step 3: Cross multiply
    2,376.71x = 3,278.49 × 1,381.86
  4. Step 4: Simplify right side
    2,376.71x = 4,530,414.19
  5. Step 5: Solve for x
    x = 4,530,414.19/2,376.71
  6. Step 6: Final answer
    x = 1,906.17

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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.