Home / 2,578.79-3,866.44-1,191.35

Finding the Fourth Proportional to 2,578.79, 3,866.44 and 1,191.35

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Solution

The fourth proportional to 2,578.79, 3,866.44 and 1,191.35 is: 1,786.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.79 : 3,866.44 = 1,191.35 : x
  2. Step 2: Convert to fraction form
    2,578.79/3,866.44 = 1,191.35/x
  3. Step 3: Cross multiply
    2,578.79x = 3,866.44 × 1,191.35
  4. Step 4: Simplify right side
    2,578.79x = 4,606,289.98
  5. Step 5: Solve for x
    x = 4,606,289.98/2,578.79
  6. Step 6: Final answer
    x = 1,786.22

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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.