Home / 7,920.06-11,871.87-2,651.11

Finding the Fourth Proportional to 7,920.06, 11,871.87 and 2,651.11

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Solution

The fourth proportional to 7,920.06, 11,871.87 and 2,651.11 is: 3,973.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.06 : 11,871.87 = 2,651.11 : x
  2. Step 2: Convert to fraction form
    7,920.06/11,871.87 = 2,651.11/x
  3. Step 3: Cross multiply
    7,920.06x = 11,871.87 × 2,651.11
  4. Step 4: Simplify right side
    7,920.06x = 31,473,660.43
  5. Step 5: Solve for x
    x = 31,473,660.43/7,920.06
  6. Step 6: Final answer
    x = 3,973.92

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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.