Home / 3,471.39-4,789.89-1,979.01

Finding the Fourth Proportional to 3,471.39, 4,789.89 and 1,979.01

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Solution

The fourth proportional to 3,471.39, 4,789.89 and 1,979.01 is: 2,730.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,471.39 : 4,789.89 = 1,979.01 : x
  2. Step 2: Convert to fraction form
    3,471.39/4,789.89 = 1,979.01/x
  3. Step 3: Cross multiply
    3,471.39x = 4,789.89 × 1,979.01
  4. Step 4: Simplify right side
    3,471.39x = 9,479,240.21
  5. Step 5: Solve for x
    x = 9,479,240.21/3,471.39
  6. Step 6: Final answer
    x = 2,730.68

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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.