Home / 3,147.76-4,343.96-1,731.56

Finding the Fourth Proportional to 3,147.76, 4,343.96 and 1,731.56

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Solution

The fourth proportional to 3,147.76, 4,343.96 and 1,731.56 is: 2,389.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.76 : 4,343.96 = 1,731.56 : x
  2. Step 2: Convert to fraction form
    3,147.76/4,343.96 = 1,731.56/x
  3. Step 3: Cross multiply
    3,147.76x = 4,343.96 × 1,731.56
  4. Step 4: Simplify right side
    3,147.76x = 7,521,818.72
  5. Step 5: Solve for x
    x = 7,521,818.72/3,147.76
  6. Step 6: Final answer
    x = 2,389.58

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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.