Home / 3,318.40-4,979.08-1,371.04

Finding the Fourth Proportional to 3,318.40, 4,979.08 and 1,371.04

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Solution

The fourth proportional to 3,318.40, 4,979.08 and 1,371.04 is: 2,057.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.40 : 4,979.08 = 1,371.04 : x
  2. Step 2: Convert to fraction form
    3,318.40/4,979.08 = 1,371.04/x
  3. Step 3: Cross multiply
    3,318.40x = 4,979.08 × 1,371.04
  4. Step 4: Simplify right side
    3,318.40x = 6,826,517.84
  5. Step 5: Solve for x
    x = 6,826,517.84/3,318.40
  6. Step 6: Final answer
    x = 2,057.17

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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.