Home / 3,113.28-4,667.04-2,139.84

Finding the Fourth Proportional to 3,113.28, 4,667.04 and 2,139.84

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Solution

The fourth proportional to 3,113.28, 4,667.04 and 2,139.84 is: 3,207.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.28 : 4,667.04 = 2,139.84 : x
  2. Step 2: Convert to fraction form
    3,113.28/4,667.04 = 2,139.84/x
  3. Step 3: Cross multiply
    3,113.28x = 4,667.04 × 2,139.84
  4. Step 4: Simplify right side
    3,113.28x = 9,986,718.87
  5. Step 5: Solve for x
    x = 9,986,718.87/3,113.28
  6. Step 6: Final answer
    x = 3,207.78

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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.