Home / 7,718.12-11,581.52-2,791.88

Finding the Fourth Proportional to 7,718.12, 11,581.52 and 2,791.88

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Solution

The fourth proportional to 7,718.12, 11,581.52 and 2,791.88 is: 4,189.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.12 : 11,581.52 = 2,791.88 : x
  2. Step 2: Convert to fraction form
    7,718.12/11,581.52 = 2,791.88/x
  3. Step 3: Cross multiply
    7,718.12x = 11,581.52 × 2,791.88
  4. Step 4: Simplify right side
    7,718.12x = 32,334,214.06
  5. Step 5: Solve for x
    x = 32,334,214.06/7,718.12
  6. Step 6: Final answer
    x = 4,189.39

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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.