Home / 3,439.85-4,747.10-1,947.74

Finding the Fourth Proportional to 3,439.85, 4,747.10 and 1,947.74

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Solution

The fourth proportional to 3,439.85, 4,747.10 and 1,947.74 is: 2,687.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.85 : 4,747.10 = 1,947.74 : x
  2. Step 2: Convert to fraction form
    3,439.85/4,747.10 = 1,947.74/x
  3. Step 3: Cross multiply
    3,439.85x = 4,747.10 × 1,947.74
  4. Step 4: Simplify right side
    3,439.85x = 9,246,083.08
  5. Step 5: Solve for x
    x = 9,246,083.08/3,439.85
  6. Step 6: Final answer
    x = 2,687.94

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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.