Home / 4,979.66-6,872.27-2,883.78

Finding the Fourth Proportional to 4,979.66, 6,872.27 and 2,883.78

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Solution

The fourth proportional to 4,979.66, 6,872.27 and 2,883.78 is: 3,979.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.66 : 6,872.27 = 2,883.78 : x
  2. Step 2: Convert to fraction form
    4,979.66/6,872.27 = 2,883.78/x
  3. Step 3: Cross multiply
    4,979.66x = 6,872.27 × 2,883.78
  4. Step 4: Simplify right side
    4,979.66x = 19,818,100.36
  5. Step 5: Solve for x
    x = 19,818,100.36/4,979.66
  6. Step 6: Final answer
    x = 3,979.81

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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.