Home / 4,919.90-6,789.39-2,681.66

Finding the Fourth Proportional to 4,919.90, 6,789.39 and 2,681.66

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Solution

The fourth proportional to 4,919.90, 6,789.39 and 2,681.66 is: 3,700.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.90 : 6,789.39 = 2,681.66 : x
  2. Step 2: Convert to fraction form
    4,919.90/6,789.39 = 2,681.66/x
  3. Step 3: Cross multiply
    4,919.90x = 6,789.39 × 2,681.66
  4. Step 4: Simplify right side
    4,919.90x = 18,206,801.64
  5. Step 5: Solve for x
    x = 18,206,801.64/4,919.90
  6. Step 6: Final answer
    x = 3,700.65

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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.