Home / 3,924.31-5,415.45-2,156.08

Finding the Fourth Proportional to 3,924.31, 5,415.45 and 2,156.08

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Solution

The fourth proportional to 3,924.31, 5,415.45 and 2,156.08 is: 2,975.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.31 : 5,415.45 = 2,156.08 : x
  2. Step 2: Convert to fraction form
    3,924.31/5,415.45 = 2,156.08/x
  3. Step 3: Cross multiply
    3,924.31x = 5,415.45 × 2,156.08
  4. Step 4: Simplify right side
    3,924.31x = 11,676,143.44
  5. Step 5: Solve for x
    x = 11,676,143.44/3,924.31
  6. Step 6: Final answer
    x = 2,975.34

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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.