Home / 3,151.20-4,723.56-1,689.96

Finding the Fourth Proportional to 3,151.20, 4,723.56 and 1,689.96

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Solution

The fourth proportional to 3,151.20, 4,723.56 and 1,689.96 is: 2,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.20 : 4,723.56 = 1,689.96 : x
  2. Step 2: Convert to fraction form
    3,151.20/4,723.56 = 1,689.96/x
  3. Step 3: Cross multiply
    3,151.20x = 4,723.56 × 1,689.96
  4. Step 4: Simplify right side
    3,151.20x = 7,982,627.46
  5. Step 5: Solve for x
    x = 7,982,627.46/3,151.20
  6. Step 6: Final answer
    x = 2,533.20

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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.