Home / 3,924.39-5,415.76-2,156.04

Finding the Fourth Proportional to 3,924.39, 5,415.76 and 2,156.04

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Solution

The fourth proportional to 3,924.39, 5,415.76 and 2,156.04 is: 2,975.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.39 : 5,415.76 = 2,156.04 : x
  2. Step 2: Convert to fraction form
    3,924.39/5,415.76 = 2,156.04/x
  3. Step 3: Cross multiply
    3,924.39x = 5,415.76 × 2,156.04
  4. Step 4: Simplify right side
    3,924.39x = 11,676,589.80
  5. Step 5: Solve for x
    x = 11,676,589.80/3,924.39
  6. Step 6: Final answer
    x = 2,975.39

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1.5x scale

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.