Home / 3,631.11-5,010.51-2,138.70

Finding the Fourth Proportional to 3,631.11, 5,010.51 and 2,138.70

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Solution

The fourth proportional to 3,631.11, 5,010.51 and 2,138.70 is: 2,951.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,631.11 : 5,010.51 = 2,138.70 : x
  2. Step 2: Convert to fraction form
    3,631.11/5,010.51 = 2,138.70/x
  3. Step 3: Cross multiply
    3,631.11x = 5,010.51 × 2,138.70
  4. Step 4: Simplify right side
    3,631.11x = 10,715,977.74
  5. Step 5: Solve for x
    x = 10,715,977.74/3,631.11
  6. Step 6: Final answer
    x = 2,951.16

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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.