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Finding the Fourth Proportional to 4,292.78, 5,921.78 and 3,243.02

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Solution

The fourth proportional to 4,292.78, 5,921.78 and 3,243.02 is: 4,473.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,292.78 : 5,921.78 = 3,243.02 : x
  2. Step 2: Convert to fraction form
    4,292.78/5,921.78 = 3,243.02/x
  3. Step 3: Cross multiply
    4,292.78x = 5,921.78 × 3,243.02
  4. Step 4: Simplify right side
    4,292.78x = 19,204,450.98
  5. Step 5: Solve for x
    x = 19,204,450.98/4,292.78
  6. Step 6: Final answer
    x = 4,473.66

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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.