Home / 3,191.43-4,787.36-1,340.70

Finding the Fourth Proportional to 3,191.43, 4,787.36 and 1,340.70

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Solution

The fourth proportional to 3,191.43, 4,787.36 and 1,340.70 is: 2,011.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.43 : 4,787.36 = 1,340.70 : x
  2. Step 2: Convert to fraction form
    3,191.43/4,787.36 = 1,340.70/x
  3. Step 3: Cross multiply
    3,191.43x = 4,787.36 × 1,340.70
  4. Step 4: Simplify right side
    3,191.43x = 6,418,413.55
  5. Step 5: Solve for x
    x = 6,418,413.55/3,191.43
  6. Step 6: Final answer
    x = 2,011.14

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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.