Home / 3,112.28-4,294.92-1,715

Finding the Fourth Proportional to 3,112.28, 4,294.92 and 1,715

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Solution

The fourth proportional to 3,112.28, 4,294.92 and 1,715 is: 2,366.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.28 : 4,294.92 = 1,715 : x
  2. Step 2: Convert to fraction form
    3,112.28/4,294.92 = 1,715/x
  3. Step 3: Cross multiply
    3,112.28x = 4,294.92 × 1,715
  4. Step 4: Simplify right side
    3,112.28x = 7,365,787.80
  5. Step 5: Solve for x
    x = 7,365,787.80/3,112.28
  6. Step 6: Final answer
    x = 2,366.69

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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.