Home / 3,924.50-5,415.87-2,156.14

Finding the Fourth Proportional to 3,924.50, 5,415.87 and 2,156.14

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Solution

The fourth proportional to 3,924.50, 5,415.87 and 2,156.14 is: 2,975.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.50 : 5,415.87 = 2,156.14 : x
  2. Step 2: Convert to fraction form
    3,924.50/5,415.87 = 2,156.14/x
  3. Step 3: Cross multiply
    3,924.50x = 5,415.87 × 2,156.14
  4. Step 4: Simplify right side
    3,924.50x = 11,677,373.94
  5. Step 5: Solve for x
    x = 11,677,373.94/3,924.50
  6. Step 6: Final answer
    x = 2,975.51

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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.