Home / 3,791.48-5,685.09-2,911.78

Finding the Fourth Proportional to 3,791.48, 5,685.09 and 2,911.78

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Solution

The fourth proportional to 3,791.48, 5,685.09 and 2,911.78 is: 4,366.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.48 : 5,685.09 = 2,911.78 : x
  2. Step 2: Convert to fraction form
    3,791.48/5,685.09 = 2,911.78/x
  3. Step 3: Cross multiply
    3,791.48x = 5,685.09 × 2,911.78
  4. Step 4: Simplify right side
    3,791.48x = 16,553,727.55
  5. Step 5: Solve for x
    x = 16,553,727.55/3,791.48
  6. Step 6: Final answer
    x = 4,366.04

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1.5x scale

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.