Home / 6,618.42-9,921.15-2,721.78

Finding the Fourth Proportional to 6,618.42, 9,921.15 and 2,721.78

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Solution

The fourth proportional to 6,618.42, 9,921.15 and 2,721.78 is: 4,080.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618.42 : 9,921.15 = 2,721.78 : x
  2. Step 2: Convert to fraction form
    6,618.42/9,921.15 = 2,721.78/x
  3. Step 3: Cross multiply
    6,618.42x = 9,921.15 × 2,721.78
  4. Step 4: Simplify right side
    6,618.42x = 27,003,187.65
  5. Step 5: Solve for x
    x = 27,003,187.65/6,618.42
  6. Step 6: Final answer
    x = 4,080.01

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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.