Home / 3,908.24-5,387.32-2,912

Finding the Fourth Proportional to 3,908.24, 5,387.32 and 2,912

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Solution

The fourth proportional to 3,908.24, 5,387.32 and 2,912 is: 4,014.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.24 : 5,387.32 = 2,912 : x
  2. Step 2: Convert to fraction form
    3,908.24/5,387.32 = 2,912/x
  3. Step 3: Cross multiply
    3,908.24x = 5,387.32 × 2,912
  4. Step 4: Simplify right side
    3,908.24x = 15,687,875.84
  5. Step 5: Solve for x
    x = 15,687,875.84/3,908.24
  6. Step 6: Final answer
    x = 4,014.05

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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.