Home / 3,471.27-4,789.79-1,979.22

Finding the Fourth Proportional to 3,471.27, 4,789.79 and 1,979.22

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Solution

The fourth proportional to 3,471.27, 4,789.79 and 1,979.22 is: 2,731.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,471.27 : 4,789.79 = 1,979.22 : x
  2. Step 2: Convert to fraction form
    3,471.27/4,789.79 = 1,979.22/x
  3. Step 3: Cross multiply
    3,471.27x = 4,789.79 × 1,979.22
  4. Step 4: Simplify right side
    3,471.27x = 9,480,038.27
  5. Step 5: Solve for x
    x = 9,480,038.27/3,471.27
  6. Step 6: Final answer
    x = 2,731.00

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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.