Home / 3,126.50-4,310.07-1,930.69

Finding the Fourth Proportional to 3,126.50, 4,310.07 and 1,930.69

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Solution

The fourth proportional to 3,126.50, 4,310.07 and 1,930.69 is: 2,661.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.50 : 4,310.07 = 1,930.69 : x
  2. Step 2: Convert to fraction form
    3,126.50/4,310.07 = 1,930.69/x
  3. Step 3: Cross multiply
    3,126.50x = 4,310.07 × 1,930.69
  4. Step 4: Simplify right side
    3,126.50x = 8,321,398.27
  5. Step 5: Solve for x
    x = 8,321,398.27/3,126.50
  6. Step 6: Final answer
    x = 2,661.57

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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.