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Finding the Fourth Proportional to 7,149.33, 10,721.72 and 6,682.89

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Solution

The fourth proportional to 7,149.33, 10,721.72 and 6,682.89 is: 10,022.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.33 : 10,721.72 = 6,682.89 : x
  2. Step 2: Convert to fraction form
    7,149.33/10,721.72 = 6,682.89/x
  3. Step 3: Cross multiply
    7,149.33x = 10,721.72 × 6,682.89
  4. Step 4: Simplify right side
    7,149.33x = 71,652,041.96
  5. Step 5: Solve for x
    x = 71,652,041.96/7,149.33
  6. Step 6: Final answer
    x = 10,022.20

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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.