Home / 3,439.86-4,746.92-1,947.70

Finding the Fourth Proportional to 3,439.86, 4,746.92 and 1,947.70

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Solution

The fourth proportional to 3,439.86, 4,746.92 and 1,947.70 is: 2,687.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.86 : 4,746.92 = 1,947.70 : x
  2. Step 2: Convert to fraction form
    3,439.86/4,746.92 = 1,947.70/x
  3. Step 3: Cross multiply
    3,439.86x = 4,746.92 × 1,947.70
  4. Step 4: Simplify right side
    3,439.86x = 9,245,576.08
  5. Step 5: Solve for x
    x = 9,245,576.08/3,439.86
  6. Step 6: Final answer
    x = 2,687.78

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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.