Home / 3,924.86-5,416.28-2,156.56

Finding the Fourth Proportional to 3,924.86, 5,416.28 and 2,156.56

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Solution

The fourth proportional to 3,924.86, 5,416.28 and 2,156.56 is: 2,976.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.86 : 5,416.28 = 2,156.56 : x
  2. Step 2: Convert to fraction form
    3,924.86/5,416.28 = 2,156.56/x
  3. Step 3: Cross multiply
    3,924.86x = 5,416.28 × 2,156.56
  4. Step 4: Simplify right side
    3,924.86x = 11,680,516.56
  5. Step 5: Solve for x
    x = 11,680,516.56/3,924.86
  6. Step 6: Final answer
    x = 2,976.04

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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.