Home / 7,319.56-10,979.84-2,125

Finding the Fourth Proportional to 7,319.56, 10,979.84 and 2,125

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Solution

The fourth proportional to 7,319.56, 10,979.84 and 2,125 is: 3,187.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319.56 : 10,979.84 = 2,125 : x
  2. Step 2: Convert to fraction form
    7,319.56/10,979.84 = 2,125/x
  3. Step 3: Cross multiply
    7,319.56x = 10,979.84 × 2,125
  4. Step 4: Simplify right side
    7,319.56x = 23,332,160
  5. Step 5: Solve for x
    x = 23,332,160/7,319.56
  6. Step 6: Final answer
    x = 3,187.65

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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.