Home / 2,789.78-3,849.92-1,610.86

Finding the Fourth Proportional to 2,789.78, 3,849.92 and 1,610.86

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Solution

The fourth proportional to 2,789.78, 3,849.92 and 1,610.86 is: 2,223.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.78 : 3,849.92 = 1,610.86 : x
  2. Step 2: Convert to fraction form
    2,789.78/3,849.92 = 1,610.86/x
  3. Step 3: Cross multiply
    2,789.78x = 3,849.92 × 1,610.86
  4. Step 4: Simplify right side
    2,789.78x = 6,201,682.13
  5. Step 5: Solve for x
    x = 6,201,682.13/2,789.78
  6. Step 6: Final answer
    x = 2,223.00

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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.