Home / 5,170.89-7,129.17-3,756.63

Finding the Fourth Proportional to 5,170.89, 7,129.17 and 3,756.63

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Solution

The fourth proportional to 5,170.89, 7,129.17 and 3,756.63 is: 5,179.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.89 : 7,129.17 = 3,756.63 : x
  2. Step 2: Convert to fraction form
    5,170.89/7,129.17 = 3,756.63/x
  3. Step 3: Cross multiply
    5,170.89x = 7,129.17 × 3,756.63
  4. Step 4: Simplify right side
    5,170.89x = 26,781,653.90
  5. Step 5: Solve for x
    x = 26,781,653.90/5,170.89
  6. Step 6: Final answer
    x = 5,179.31

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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.