Home / 3,924.61-5,415.96-2,156.33

Finding the Fourth Proportional to 3,924.61, 5,415.96 and 2,156.33

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Solution

The fourth proportional to 3,924.61, 5,415.96 and 2,156.33 is: 2,975.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.61 : 5,415.96 = 2,156.33 : x
  2. Step 2: Convert to fraction form
    3,924.61/5,415.96 = 2,156.33/x
  3. Step 3: Cross multiply
    3,924.61x = 5,415.96 × 2,156.33
  4. Step 4: Simplify right side
    3,924.61x = 11,678,569.95
  5. Step 5: Solve for x
    x = 11,678,569.95/3,924.61
  6. Step 6: Final answer
    x = 2,975.73

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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.