Home / 2,631.75-3,946.85-1,243.71

Finding the Fourth Proportional to 2,631.75, 3,946.85 and 1,243.71

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Solution

The fourth proportional to 2,631.75, 3,946.85 and 1,243.71 is: 1,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.75 : 3,946.85 = 1,243.71 : x
  2. Step 2: Convert to fraction form
    2,631.75/3,946.85 = 1,243.71/x
  3. Step 3: Cross multiply
    2,631.75x = 3,946.85 × 1,243.71
  4. Step 4: Simplify right side
    2,631.75x = 4,908,730.59
  5. Step 5: Solve for x
    x = 4,908,730.59/2,631.75
  6. Step 6: Final answer
    x = 1,865.20

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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.