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Finding the Fourth Proportional to 6,603.48, 9,912.87 and 5,221.44

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Solution

The fourth proportional to 6,603.48, 9,912.87 and 5,221.44 is: 7,838.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603.48 : 9,912.87 = 5,221.44 : x
  2. Step 2: Convert to fraction form
    6,603.48/9,912.87 = 5,221.44/x
  3. Step 3: Cross multiply
    6,603.48x = 9,912.87 × 5,221.44
  4. Step 4: Simplify right side
    6,603.48x = 51,759,455.93
  5. Step 5: Solve for x
    x = 51,759,455.93/6,603.48
  6. Step 6: Final answer
    x = 7,838.21

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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.