Home / 7,319.69-10,979.84-2,125.57

Finding the Fourth Proportional to 7,319.69, 10,979.84 and 2,125.57

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Solution

The fourth proportional to 7,319.69, 10,979.84 and 2,125.57 is: 3,188.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.69 : 10,979.84 = 2,125.57 : x
  2. Step 2: Convert to fraction form
    7,319.69/10,979.84 = 2,125.57/x
  3. Step 3: Cross multiply
    7,319.69x = 10,979.84 × 2,125.57
  4. Step 4: Simplify right side
    7,319.69x = 23,338,352.98
  5. Step 5: Solve for x
    x = 23,338,352.98/7,319.69
  6. Step 6: Final answer
    x = 3,188.43

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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.