Home / 7,931.18-11,896.91-2,087.57

Finding the Fourth Proportional to 7,931.18, 11,896.91 and 2,087.57

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Solution

The fourth proportional to 7,931.18, 11,896.91 and 2,087.57 is: 3,131.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.18 : 11,896.91 = 2,087.57 : x
  2. Step 2: Convert to fraction form
    7,931.18/11,896.91 = 2,087.57/x
  3. Step 3: Cross multiply
    7,931.18x = 11,896.91 × 2,087.57
  4. Step 4: Simplify right side
    7,931.18x = 24,835,621.97
  5. Step 5: Solve for x
    x = 24,835,621.97/7,931.18
  6. Step 6: Final answer
    x = 3,131.39

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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.