Home / 2,921.68-4,382.36-1,072.65

Finding the Fourth Proportional to 2,921.68, 4,382.36 and 1,072.65

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Solution

The fourth proportional to 2,921.68, 4,382.36 and 1,072.65 is: 1,608.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.68 : 4,382.36 = 1,072.65 : x
  2. Step 2: Convert to fraction form
    2,921.68/4,382.36 = 1,072.65/x
  3. Step 3: Cross multiply
    2,921.68x = 4,382.36 × 1,072.65
  4. Step 4: Simplify right side
    2,921.68x = 4,700,734.93
  5. Step 5: Solve for x
    x = 4,700,734.93/2,921.68
  6. Step 6: Final answer
    x = 1,608.92

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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.