Home / 2,982.78-4,436.62-2,972.79

Finding the Fourth Proportional to 2,982.78, 4,436.62 and 2,972.79

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Solution

The fourth proportional to 2,982.78, 4,436.62 and 2,972.79 is: 4,421.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,982.78 : 4,436.62 = 2,972.79 : x
  2. Step 2: Convert to fraction form
    2,982.78/4,436.62 = 2,972.79/x
  3. Step 3: Cross multiply
    2,982.78x = 4,436.62 × 2,972.79
  4. Step 4: Simplify right side
    2,982.78x = 13,189,132.14
  5. Step 5: Solve for x
    x = 13,189,132.14/2,982.78
  6. Step 6: Final answer
    x = 4,421.76

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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.