Home / 3,789.79-5,229.80-2,111.06

Finding the Fourth Proportional to 3,789.79, 5,229.80 and 2,111.06

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Solution

The fourth proportional to 3,789.79, 5,229.80 and 2,111.06 is: 2,913.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.79 : 5,229.80 = 2,111.06 : x
  2. Step 2: Convert to fraction form
    3,789.79/5,229.80 = 2,111.06/x
  3. Step 3: Cross multiply
    3,789.79x = 5,229.80 × 2,111.06
  4. Step 4: Simplify right side
    3,789.79x = 11,040,432.02
  5. Step 5: Solve for x
    x = 11,040,432.02/3,789.79
  6. Step 6: Final answer
    x = 2,913.21

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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.