Home / 4,919.91-6,789.47-2,681.79

Finding the Fourth Proportional to 4,919.91, 6,789.47 and 2,681.79

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Solution

The fourth proportional to 4,919.91, 6,789.47 and 2,681.79 is: 3,700.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.91 : 6,789.47 = 2,681.79 : x
  2. Step 2: Convert to fraction form
    4,919.91/6,789.47 = 2,681.79/x
  3. Step 3: Cross multiply
    4,919.91x = 6,789.47 × 2,681.79
  4. Step 4: Simplify right side
    4,919.91x = 18,207,932.75
  5. Step 5: Solve for x
    x = 18,207,932.75/4,919.91
  6. Step 6: Final answer
    x = 3,700.87

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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.