Home / 4,981.06-6,872.34-2,884.78

Finding the Fourth Proportional to 4,981.06, 6,872.34 and 2,884.78

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Solution

The fourth proportional to 4,981.06, 6,872.34 and 2,884.78 is: 3,980.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.06 : 6,872.34 = 2,884.78 : x
  2. Step 2: Convert to fraction form
    4,981.06/6,872.34 = 2,884.78/x
  3. Step 3: Cross multiply
    4,981.06x = 6,872.34 × 2,884.78
  4. Step 4: Simplify right side
    4,981.06x = 19,825,188.99
  5. Step 5: Solve for x
    x = 19,825,188.99/4,981.06
  6. Step 6: Final answer
    x = 3,980.11

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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.