Home / 2,619.73-3,919.71-1,561.63

Finding the Fourth Proportional to 2,619.73, 3,919.71 and 1,561.63

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Solution

The fourth proportional to 2,619.73, 3,919.71 and 1,561.63 is: 2,336.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.73 : 3,919.71 = 1,561.63 : x
  2. Step 2: Convert to fraction form
    2,619.73/3,919.71 = 1,561.63/x
  3. Step 3: Cross multiply
    2,619.73x = 3,919.71 × 1,561.63
  4. Step 4: Simplify right side
    2,619.73x = 6,121,136.73
  5. Step 5: Solve for x
    x = 6,121,136.73/2,619.73
  6. Step 6: Final answer
    x = 2,336.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.