Home / 4,979.17-6,872.32-2,855.05

Finding the Fourth Proportional to 4,979.17, 6,872.32 and 2,855.05

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Solution

The fourth proportional to 4,979.17, 6,872.32 and 2,855.05 is: 3,940.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.17 : 6,872.32 = 2,855.05 : x
  2. Step 2: Convert to fraction form
    4,979.17/6,872.32 = 2,855.05/x
  3. Step 3: Cross multiply
    4,979.17x = 6,872.32 × 2,855.05
  4. Step 4: Simplify right side
    4,979.17x = 19,620,803.60
  5. Step 5: Solve for x
    x = 19,620,803.60/4,979.17
  6. Step 6: Final answer
    x = 3,940.58

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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.