Home / 3,718.65-5,132.84-2,147.79

Finding the Fourth Proportional to 3,718.65, 5,132.84 and 2,147.79

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Solution

The fourth proportional to 3,718.65, 5,132.84 and 2,147.79 is: 2,964.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.65 : 5,132.84 = 2,147.79 : x
  2. Step 2: Convert to fraction form
    3,718.65/5,132.84 = 2,147.79/x
  3. Step 3: Cross multiply
    3,718.65x = 5,132.84 × 2,147.79
  4. Step 4: Simplify right side
    3,718.65x = 11,024,251.68
  5. Step 5: Solve for x
    x = 11,024,251.68/3,718.65
  6. Step 6: Final answer
    x = 2,964.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.