Home / 7,131.60-10,695.78-3,431.94

Finding the Fourth Proportional to 7,131.60, 10,695.78 and 3,431.94

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Solution

The fourth proportional to 7,131.60, 10,695.78 and 3,431.94 is: 5,147.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.60 : 10,695.78 = 3,431.94 : x
  2. Step 2: Convert to fraction form
    7,131.60/10,695.78 = 3,431.94/x
  3. Step 3: Cross multiply
    7,131.60x = 10,695.78 × 3,431.94
  4. Step 4: Simplify right side
    7,131.60x = 36,707,275.21
  5. Step 5: Solve for x
    x = 36,707,275.21/7,131.60
  6. Step 6: Final answer
    x = 5,147.13

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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.