Home / 3,861.22-5,328.97-2,182.70

Finding the Fourth Proportional to 3,861.22, 5,328.97 and 2,182.70

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Solution

The fourth proportional to 3,861.22, 5,328.97 and 2,182.70 is: 3,012.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.22 : 5,328.97 = 2,182.70 : x
  2. Step 2: Convert to fraction form
    3,861.22/5,328.97 = 2,182.70/x
  3. Step 3: Cross multiply
    3,861.22x = 5,328.97 × 2,182.70
  4. Step 4: Simplify right side
    3,861.22x = 11,631,542.82
  5. Step 5: Solve for x
    x = 11,631,542.82/3,861.22
  6. Step 6: Final answer
    x = 3,012.40

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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.