Home / 4,981.57-6,872.91-2,884.21

Finding the Fourth Proportional to 4,981.57, 6,872.91 and 2,884.21

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Solution

The fourth proportional to 4,981.57, 6,872.91 and 2,884.21 is: 3,979.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.57 : 6,872.91 = 2,884.21 : x
  2. Step 2: Convert to fraction form
    4,981.57/6,872.91 = 2,884.21/x
  3. Step 3: Cross multiply
    4,981.57x = 6,872.91 × 2,884.21
  4. Step 4: Simplify right side
    4,981.57x = 19,822,915.75
  5. Step 5: Solve for x
    x = 19,822,915.75/4,981.57
  6. Step 6: Final answer
    x = 3,979.25

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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.