Home / 3,126.26-4,296.18-2,981.70

Finding the Fourth Proportional to 3,126.26, 4,296.18 and 2,981.70

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Solution

The fourth proportional to 3,126.26, 4,296.18 and 2,981.70 is: 4,097.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.26 : 4,296.18 = 2,981.70 : x
  2. Step 2: Convert to fraction form
    3,126.26/4,296.18 = 2,981.70/x
  3. Step 3: Cross multiply
    3,126.26x = 4,296.18 × 2,981.70
  4. Step 4: Simplify right side
    3,126.26x = 12,809,919.91
  5. Step 5: Solve for x
    x = 12,809,919.91/3,126.26
  6. Step 6: Final answer
    x = 4,097.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.