Home / 2,769.12-3,821.28-1,527.12

Finding the Fourth Proportional to 2,769.12, 3,821.28 and 1,527.12

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Solution

The fourth proportional to 2,769.12, 3,821.28 and 1,527.12 is: 2,107.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.12 : 3,821.28 = 1,527.12 : x
  2. Step 2: Convert to fraction form
    2,769.12/3,821.28 = 1,527.12/x
  3. Step 3: Cross multiply
    2,769.12x = 3,821.28 × 1,527.12
  4. Step 4: Simplify right side
    2,769.12x = 5,835,553.11
  5. Step 5: Solve for x
    x = 5,835,553.11/2,769.12
  6. Step 6: Final answer
    x = 2,107.37

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1.5x scale

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.