Home / 4,876.26-6,729.42-2,780.28

Finding the Fourth Proportional to 4,876.26, 6,729.42 and 2,780.28

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Solution

The fourth proportional to 4,876.26, 6,729.42 and 2,780.28 is: 3,836.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,876.26 : 6,729.42 = 2,780.28 : x
  2. Step 2: Convert to fraction form
    4,876.26/6,729.42 = 2,780.28/x
  3. Step 3: Cross multiply
    4,876.26x = 6,729.42 × 2,780.28
  4. Step 4: Simplify right side
    4,876.26x = 18,709,671.84
  5. Step 5: Solve for x
    x = 18,709,671.84/4,876.26
  6. Step 6: Final answer
    x = 3,836.89

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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.