Home / 3,147.30-4,717.31-1,391.76

Finding the Fourth Proportional to 3,147.30, 4,717.31 and 1,391.76

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Solution

The fourth proportional to 3,147.30, 4,717.31 and 1,391.76 is: 2,086.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.30 : 4,717.31 = 1,391.76 : x
  2. Step 2: Convert to fraction form
    3,147.30/4,717.31 = 1,391.76/x
  3. Step 3: Cross multiply
    3,147.30x = 4,717.31 × 1,391.76
  4. Step 4: Simplify right side
    3,147.30x = 6,565,356.41
  5. Step 5: Solve for x
    x = 6,565,356.41/3,147.30
  6. Step 6: Final answer
    x = 2,086.03

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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.