Home / 4,005.74-5,516.46-3,919.88

Finding the Fourth Proportional to 4,005.74, 5,516.46 and 3,919.88

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Solution

The fourth proportional to 4,005.74, 5,516.46 and 3,919.88 is: 5,398.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,005.74 : 5,516.46 = 3,919.88 : x
  2. Step 2: Convert to fraction form
    4,005.74/5,516.46 = 3,919.88/x
  3. Step 3: Cross multiply
    4,005.74x = 5,516.46 × 3,919.88
  4. Step 4: Simplify right side
    4,005.74x = 21,623,833.64
  5. Step 5: Solve for x
    x = 21,623,833.64/4,005.74
  6. Step 6: Final answer
    x = 5,398.22

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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.