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Finding the Fourth Proportional to 5,009.78, 6,912.24 and 3,239.25

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Solution

The fourth proportional to 5,009.78, 6,912.24 and 3,239.25 is: 4,469.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,009.78 : 6,912.24 = 3,239.25 : x
  2. Step 2: Convert to fraction form
    5,009.78/6,912.24 = 3,239.25/x
  3. Step 3: Cross multiply
    5,009.78x = 6,912.24 × 3,239.25
  4. Step 4: Simplify right side
    5,009.78x = 22,390,473.42
  5. Step 5: Solve for x
    x = 22,390,473.42/5,009.78
  6. Step 6: Final answer
    x = 4,469.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.