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Finding the Fourth Proportional to 6,721.88, 10,082.82 and 2,104.88

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Solution

The fourth proportional to 6,721.88, 10,082.82 and 2,104.88 is: 3,157.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.88 : 10,082.82 = 2,104.88 : x
  2. Step 2: Convert to fraction form
    6,721.88/10,082.82 = 2,104.88/x
  3. Step 3: Cross multiply
    6,721.88x = 10,082.82 × 2,104.88
  4. Step 4: Simplify right side
    6,721.88x = 21,223,126.16
  5. Step 5: Solve for x
    x = 21,223,126.16/6,721.88
  6. Step 6: Final answer
    x = 3,157.32

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1.5x scale

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.