Home / 2,931.78-4,398.42-2,160.96

Finding the Fourth Proportional to 2,931.78, 4,398.42 and 2,160.96

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Solution

The fourth proportional to 2,931.78, 4,398.42 and 2,160.96 is: 3,241.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.78 : 4,398.42 = 2,160.96 : x
  2. Step 2: Convert to fraction form
    2,931.78/4,398.42 = 2,160.96/x
  3. Step 3: Cross multiply
    2,931.78x = 4,398.42 × 2,160.96
  4. Step 4: Simplify right side
    2,931.78x = 9,504,809.68
  5. Step 5: Solve for x
    x = 9,504,809.68/2,931.78
  6. Step 6: Final answer
    x = 3,241.99

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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.