Home / 2,760.89-3,809.63-1,581.77

Finding the Fourth Proportional to 2,760.89, 3,809.63 and 1,581.77

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Solution

The fourth proportional to 2,760.89, 3,809.63 and 1,581.77 is: 2,182.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.89 : 3,809.63 = 1,581.77 : x
  2. Step 2: Convert to fraction form
    2,760.89/3,809.63 = 1,581.77/x
  3. Step 3: Cross multiply
    2,760.89x = 3,809.63 × 1,581.77
  4. Step 4: Simplify right side
    2,760.89x = 6,025,950.54
  5. Step 5: Solve for x
    x = 6,025,950.54/2,760.89
  6. Step 6: Final answer
    x = 2,182.61

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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.