Home / 7,774.38-11,657.79-2,578.50

Finding the Fourth Proportional to 7,774.38, 11,657.79 and 2,578.50

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Solution

The fourth proportional to 7,774.38, 11,657.79 and 2,578.50 is: 3,866.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,774.38 : 11,657.79 = 2,578.50 : x
  2. Step 2: Convert to fraction form
    7,774.38/11,657.79 = 2,578.50/x
  3. Step 3: Cross multiply
    7,774.38x = 11,657.79 × 2,578.50
  4. Step 4: Simplify right side
    7,774.38x = 30,059,611.52
  5. Step 5: Solve for x
    x = 30,059,611.52/7,774.38
  6. Step 6: Final answer
    x = 3,866.50

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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.