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Finding the Fourth Proportional to 6,648.21, 9,936.27 and 6,122.79

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Solution

The fourth proportional to 6,648.21, 9,936.27 and 6,122.79 is: 9,150.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,648.21 : 9,936.27 = 6,122.79 : x
  2. Step 2: Convert to fraction form
    6,648.21/9,936.27 = 6,122.79/x
  3. Step 3: Cross multiply
    6,648.21x = 9,936.27 × 6,122.79
  4. Step 4: Simplify right side
    6,648.21x = 60,837,694.59
  5. Step 5: Solve for x
    x = 60,837,694.59/6,648.21
  6. Step 6: Final answer
    x = 9,150.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.