Home / 3,941.79-5,435.99-2,877.86

Finding the Fourth Proportional to 3,941.79, 5,435.99 and 2,877.86

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Solution

The fourth proportional to 3,941.79, 5,435.99 and 2,877.86 is: 3,968.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.79 : 5,435.99 = 2,877.86 : x
  2. Step 2: Convert to fraction form
    3,941.79/5,435.99 = 2,877.86/x
  3. Step 3: Cross multiply
    3,941.79x = 5,435.99 × 2,877.86
  4. Step 4: Simplify right side
    3,941.79x = 15,644,028.17
  5. Step 5: Solve for x
    x = 15,644,028.17/3,941.79
  6. Step 6: Final answer
    x = 3,968.77

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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.