Home / 3,920.28-5,871.78-2,378.04

Finding the Fourth Proportional to 3,920.28, 5,871.78 and 2,378.04

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Solution

The fourth proportional to 3,920.28, 5,871.78 and 2,378.04 is: 3,561.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.28 : 5,871.78 = 2,378.04 : x
  2. Step 2: Convert to fraction form
    3,920.28/5,871.78 = 2,378.04/x
  3. Step 3: Cross multiply
    3,920.28x = 5,871.78 × 2,378.04
  4. Step 4: Simplify right side
    3,920.28x = 13,963,327.71
  5. Step 5: Solve for x
    x = 13,963,327.71/3,920.28
  6. Step 6: Final answer
    x = 3,561.82

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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.