Home / 7,857.06-11,785.92-3,113.20

Finding the Fourth Proportional to 7,857.06, 11,785.92 and 3,113.20

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Solution

The fourth proportional to 7,857.06, 11,785.92 and 3,113.20 is: 4,669.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.06 : 11,785.92 = 3,113.20 : x
  2. Step 2: Convert to fraction form
    7,857.06/11,785.92 = 3,113.20/x
  3. Step 3: Cross multiply
    7,857.06x = 11,785.92 × 3,113.20
  4. Step 4: Simplify right side
    7,857.06x = 36,691,926.14
  5. Step 5: Solve for x
    x = 36,691,926.14/7,857.06
  6. Step 6: Final answer
    x = 4,669.93

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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.