Home / 4,919.78-6,789.45-2,681.54

Finding the Fourth Proportional to 4,919.78, 6,789.45 and 2,681.54

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Solution

The fourth proportional to 4,919.78, 6,789.45 and 2,681.54 is: 3,700.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.78 : 6,789.45 = 2,681.54 : x
  2. Step 2: Convert to fraction form
    4,919.78/6,789.45 = 2,681.54/x
  3. Step 3: Cross multiply
    4,919.78x = 6,789.45 × 2,681.54
  4. Step 4: Simplify right side
    4,919.78x = 18,206,147.81
  5. Step 5: Solve for x
    x = 18,206,147.81/4,919.78
  6. Step 6: Final answer
    x = 3,700.61

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1.5x scale

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.