Home / 6,618.24-9,920.69-2,919.82

Finding the Fourth Proportional to 6,618.24, 9,920.69 and 2,919.82

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Solution

The fourth proportional to 6,618.24, 9,920.69 and 2,919.82 is: 4,376.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618.24 : 9,920.69 = 2,919.82 : x
  2. Step 2: Convert to fraction form
    6,618.24/9,920.69 = 2,919.82/x
  3. Step 3: Cross multiply
    6,618.24x = 9,920.69 × 2,919.82
  4. Step 4: Simplify right side
    6,618.24x = 28,966,597.69
  5. Step 5: Solve for x
    x = 28,966,597.69/6,618.24
  6. Step 6: Final answer
    x = 4,376.78

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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.