Home / 3,924.72-5,416.36-2,156.48

Finding the Fourth Proportional to 3,924.72, 5,416.36 and 2,156.48

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Solution

The fourth proportional to 3,924.72, 5,416.36 and 2,156.48 is: 2,976.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.72 : 5,416.36 = 2,156.48 : x
  2. Step 2: Convert to fraction form
    3,924.72/5,416.36 = 2,156.48/x
  3. Step 3: Cross multiply
    3,924.72x = 5,416.36 × 2,156.48
  4. Step 4: Simplify right side
    3,924.72x = 11,680,272.01
  5. Step 5: Solve for x
    x = 11,680,272.01/3,924.72
  6. Step 6: Final answer
    x = 2,976.08

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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.