Home / 2,631.41-3,945.15-1,591.20

Finding the Fourth Proportional to 2,631.41, 3,945.15 and 1,591.20

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Solution

The fourth proportional to 2,631.41, 3,945.15 and 1,591.20 is: 2,385.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.41 : 3,945.15 = 1,591.20 : x
  2. Step 2: Convert to fraction form
    2,631.41/3,945.15 = 1,591.20/x
  3. Step 3: Cross multiply
    2,631.41x = 3,945.15 × 1,591.20
  4. Step 4: Simplify right side
    2,631.41x = 6,277,522.68
  5. Step 5: Solve for x
    x = 6,277,522.68/2,631.41
  6. Step 6: Final answer
    x = 2,385.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.