Home / 3,919.17-5,400.65-2,796.95

Finding the Fourth Proportional to 3,919.17, 5,400.65 and 2,796.95

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Solution

The fourth proportional to 3,919.17, 5,400.65 and 2,796.95 is: 3,854.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.17 : 5,400.65 = 2,796.95 : x
  2. Step 2: Convert to fraction form
    3,919.17/5,400.65 = 2,796.95/x
  3. Step 3: Cross multiply
    3,919.17x = 5,400.65 × 2,796.95
  4. Step 4: Simplify right side
    3,919.17x = 15,105,307.03
  5. Step 5: Solve for x
    x = 15,105,307.03/3,919.17
  6. Step 6: Final answer
    x = 3,854.21

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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.