Home / 2,819.93-3,891.45-1,561.04

Finding the Fourth Proportional to 2,819.93, 3,891.45 and 1,561.04

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Solution

The fourth proportional to 2,819.93, 3,891.45 and 1,561.04 is: 2,154.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.93 : 3,891.45 = 1,561.04 : x
  2. Step 2: Convert to fraction form
    2,819.93/3,891.45 = 1,561.04/x
  3. Step 3: Cross multiply
    2,819.93x = 3,891.45 × 1,561.04
  4. Step 4: Simplify right side
    2,819.93x = 6,074,689.65
  5. Step 5: Solve for x
    x = 6,074,689.65/2,819.93
  6. Step 6: Final answer
    x = 2,154.20

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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.