Home / 1,995.12-2,753.10-1,209.24

Finding the Fourth Proportional to 1,995.12, 2,753.10 and 1,209.24

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Solution

The fourth proportional to 1,995.12, 2,753.10 and 1,209.24 is: 1,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.12 : 2,753.10 = 1,209.24 : x
  2. Step 2: Convert to fraction form
    1,995.12/2,753.10 = 1,209.24/x
  3. Step 3: Cross multiply
    1,995.12x = 2,753.10 × 1,209.24
  4. Step 4: Simplify right side
    1,995.12x = 3,329,158.64
  5. Step 5: Solve for x
    x = 3,329,158.64/1,995.12
  6. Step 6: Final answer
    x = 1,668.65

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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.