Home / 4,913.66-6,780.99-2,789.15

Finding the Fourth Proportional to 4,913.66, 6,780.99 and 2,789.15

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Solution

The fourth proportional to 4,913.66, 6,780.99 and 2,789.15 is: 3,849.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.66 : 6,780.99 = 2,789.15 : x
  2. Step 2: Convert to fraction form
    4,913.66/6,780.99 = 2,789.15/x
  3. Step 3: Cross multiply
    4,913.66x = 6,780.99 × 2,789.15
  4. Step 4: Simplify right side
    4,913.66x = 18,913,198.26
  5. Step 5: Solve for x
    x = 18,913,198.26/4,913.66
  6. Step 6: Final answer
    x = 3,849.11

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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.