Home / 2,760.32-3,809.76-1,581.78

Finding the Fourth Proportional to 2,760.32, 3,809.76 and 1,581.78

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Solution

The fourth proportional to 2,760.32, 3,809.76 and 1,581.78 is: 2,183.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.32 : 3,809.76 = 1,581.78 : x
  2. Step 2: Convert to fraction form
    2,760.32/3,809.76 = 1,581.78/x
  3. Step 3: Cross multiply
    2,760.32x = 3,809.76 × 1,581.78
  4. Step 4: Simplify right side
    2,760.32x = 6,026,202.17
  5. Step 5: Solve for x
    x = 6,026,202.17/2,760.32
  6. Step 6: Final answer
    x = 2,183.15

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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.