Home / 2,511.28-3,767.34-779.50

Finding the Fourth Proportional to 2,511.28, 3,767.34 and 779.50

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Solution

The fourth proportional to 2,511.28, 3,767.34 and 779.50 is: 1,169.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,511.28 : 3,767.34 = 779.50 : x
  2. Step 2: Convert to fraction form
    2,511.28/3,767.34 = 779.50/x
  3. Step 3: Cross multiply
    2,511.28x = 3,767.34 × 779.50
  4. Step 4: Simplify right side
    2,511.28x = 2,936,641.53
  5. Step 5: Solve for x
    x = 2,936,641.53/2,511.28
  6. Step 6: Final answer
    x = 1,169.38

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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.