Home / 6,619.80-9,925.92-2,721

Finding the Fourth Proportional to 6,619.80, 9,925.92 and 2,721

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Solution

The fourth proportional to 6,619.80, 9,925.92 and 2,721 is: 4,079.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.80 : 9,925.92 = 2,721 : x
  2. Step 2: Convert to fraction form
    6,619.80/9,925.92 = 2,721/x
  3. Step 3: Cross multiply
    6,619.80x = 9,925.92 × 2,721
  4. Step 4: Simplify right side
    6,619.80x = 27,008,428.32
  5. Step 5: Solve for x
    x = 27,008,428.32/6,619.80
  6. Step 6: Final answer
    x = 4,079.95

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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.