Home / 7,886.28-11,828.70-2,691.84

Finding the Fourth Proportional to 7,886.28, 11,828.70 and 2,691.84

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Solution

The fourth proportional to 7,886.28, 11,828.70 and 2,691.84 is: 4,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.28 : 11,828.70 = 2,691.84 : x
  2. Step 2: Convert to fraction form
    7,886.28/11,828.70 = 2,691.84/x
  3. Step 3: Cross multiply
    7,886.28x = 11,828.70 × 2,691.84
  4. Step 4: Simplify right side
    7,886.28x = 31,840,967.81
  5. Step 5: Solve for x
    x = 31,840,967.81/7,886.28
  6. Step 6: Final answer
    x = 4,037.51

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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.