Home / 7,129.56-10,696.64-3,431.29

Finding the Fourth Proportional to 7,129.56, 10,696.64 and 3,431.29

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Solution

The fourth proportional to 7,129.56, 10,696.64 and 3,431.29 is: 5,148.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.56 : 10,696.64 = 3,431.29 : x
  2. Step 2: Convert to fraction form
    7,129.56/10,696.64 = 3,431.29/x
  3. Step 3: Cross multiply
    7,129.56x = 10,696.64 × 3,431.29
  4. Step 4: Simplify right side
    7,129.56x = 36,703,273.87
  5. Step 5: Solve for x
    x = 36,703,273.87/7,129.56
  6. Step 6: Final answer
    x = 5,148.04

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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.