Home / 11,891.16-17,835.39-3,126.76

Finding the Fourth Proportional to 11,891.16, 17,835.39 and 3,126.76

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Solution

The fourth proportional to 11,891.16, 17,835.39 and 3,126.76 is: 4,689.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.16 : 17,835.39 = 3,126.76 : x
  2. Step 2: Convert to fraction form
    11,891.16/17,835.39 = 3,126.76/x
  3. Step 3: Cross multiply
    11,891.16x = 17,835.39 × 3,126.76
  4. Step 4: Simplify right side
    11,891.16x = 55,766,939.45
  5. Step 5: Solve for x
    x = 55,766,939.45/11,891.16
  6. Step 6: Final answer
    x = 4,689.78

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1.5x scale

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.