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Finding the Fourth Proportional to 6,419.84, 9,627.80 and 2,722

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Solution

The fourth proportional to 6,419.84, 9,627.80 and 2,722 is: 4,082.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.84 : 9,627.80 = 2,722 : x
  2. Step 2: Convert to fraction form
    6,419.84/9,627.80 = 2,722/x
  3. Step 3: Cross multiply
    6,419.84x = 9,627.80 × 2,722
  4. Step 4: Simplify right side
    6,419.84x = 26,206,871.60
  5. Step 5: Solve for x
    x = 26,206,871.60/6,419.84
  6. Step 6: Final answer
    x = 4,082.17

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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.