Home / 5,129.42-7,696.59-2,531.78

Finding the Fourth Proportional to 5,129.42, 7,696.59 and 2,531.78

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Solution

The fourth proportional to 5,129.42, 7,696.59 and 2,531.78 is: 3,798.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.42 : 7,696.59 = 2,531.78 : x
  2. Step 2: Convert to fraction form
    5,129.42/7,696.59 = 2,531.78/x
  3. Step 3: Cross multiply
    5,129.42x = 7,696.59 × 2,531.78
  4. Step 4: Simplify right side
    5,129.42x = 19,486,072.63
  5. Step 5: Solve for x
    x = 19,486,072.63/5,129.42
  6. Step 6: Final answer
    x = 3,798.88

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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.