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Finding the Fourth Proportional to 2,671.85, 3,685.19 and 1,963.46

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Solution

The fourth proportional to 2,671.85, 3,685.19 and 1,963.46 is: 2,708.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,671.85 : 3,685.19 = 1,963.46 : x
  2. Step 2: Convert to fraction form
    2,671.85/3,685.19 = 1,963.46/x
  3. Step 3: Cross multiply
    2,671.85x = 3,685.19 × 1,963.46
  4. Step 4: Simplify right side
    2,671.85x = 7,235,694.91
  5. Step 5: Solve for x
    x = 7,235,694.91/2,671.85
  6. Step 6: Final answer
    x = 2,708.12

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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.