Home / 3,398.24-4,688.38-2,139.39

Finding the Fourth Proportional to 3,398.24, 4,688.38 and 2,139.39

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Solution

The fourth proportional to 3,398.24, 4,688.38 and 2,139.39 is: 2,951.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.24 : 4,688.38 = 2,139.39 : x
  2. Step 2: Convert to fraction form
    3,398.24/4,688.38 = 2,139.39/x
  3. Step 3: Cross multiply
    3,398.24x = 4,688.38 × 2,139.39
  4. Step 4: Simplify right side
    3,398.24x = 10,030,273.29
  5. Step 5: Solve for x
    x = 10,030,273.29/3,398.24
  6. Step 6: Final answer
    x = 2,951.61

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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.