Home / 3,471.31-4,790.17-1,979.29

Finding the Fourth Proportional to 3,471.31, 4,790.17 and 1,979.29

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Solution

The fourth proportional to 3,471.31, 4,790.17 and 1,979.29 is: 2,731.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,471.31 : 4,790.17 = 1,979.29 : x
  2. Step 2: Convert to fraction form
    3,471.31/4,790.17 = 1,979.29/x
  3. Step 3: Cross multiply
    3,471.31x = 4,790.17 × 1,979.29
  4. Step 4: Simplify right side
    3,471.31x = 9,481,135.58
  5. Step 5: Solve for x
    x = 9,481,135.58/3,471.31
  6. Step 6: Final answer
    x = 2,731.28

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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.