Home / 3,471.06-4,789.72-1,979.30

Finding the Fourth Proportional to 3,471.06, 4,789.72 and 1,979.30

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Solution

The fourth proportional to 3,471.06, 4,789.72 and 1,979.30 is: 2,731.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,471.06 : 4,789.72 = 1,979.30 : x
  2. Step 2: Convert to fraction form
    3,471.06/4,789.72 = 1,979.30/x
  3. Step 3: Cross multiply
    3,471.06x = 4,789.72 × 1,979.30
  4. Step 4: Simplify right side
    3,471.06x = 9,480,292.80
  5. Step 5: Solve for x
    x = 9,480,292.80/3,471.06
  6. Step 6: Final answer
    x = 2,731.24

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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.