Home / 3,422.31-4,722.81-2,005.68

Finding the Fourth Proportional to 3,422.31, 4,722.81 and 2,005.68

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Solution

The fourth proportional to 3,422.31, 4,722.81 and 2,005.68 is: 2,767.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.31 : 4,722.81 = 2,005.68 : x
  2. Step 2: Convert to fraction form
    3,422.31/4,722.81 = 2,005.68/x
  3. Step 3: Cross multiply
    3,422.31x = 4,722.81 × 2,005.68
  4. Step 4: Simplify right side
    3,422.31x = 9,472,445.56
  5. Step 5: Solve for x
    x = 9,472,445.56/3,422.31
  6. Step 6: Final answer
    x = 2,767.85

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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.