Home / 3,129.48-4,319.46-1,951.92

Finding the Fourth Proportional to 3,129.48, 4,319.46 and 1,951.92

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Solution

The fourth proportional to 3,129.48, 4,319.46 and 1,951.92 is: 2,694.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.48 : 4,319.46 = 1,951.92 : x
  2. Step 2: Convert to fraction form
    3,129.48/4,319.46 = 1,951.92/x
  3. Step 3: Cross multiply
    3,129.48x = 4,319.46 × 1,951.92
  4. Step 4: Simplify right side
    3,129.48x = 8,431,240.36
  5. Step 5: Solve for x
    x = 8,431,240.36/3,129.48
  6. Step 6: Final answer
    x = 2,694.13

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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.