Home / 7,926.28-11,891.38-2,379.72

Finding the Fourth Proportional to 7,926.28, 11,891.38 and 2,379.72

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Solution

The fourth proportional to 7,926.28, 11,891.38 and 2,379.72 is: 3,570.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,926.28 : 11,891.38 = 2,379.72 : x
  2. Step 2: Convert to fraction form
    7,926.28/11,891.38 = 2,379.72/x
  3. Step 3: Cross multiply
    7,926.28x = 11,891.38 × 2,379.72
  4. Step 4: Simplify right side
    7,926.28x = 28,298,154.81
  5. Step 5: Solve for x
    x = 28,298,154.81/7,926.28
  6. Step 6: Final answer
    x = 3,570.17

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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.