Home / 7,112.84-10,668.78-2,182.05

Finding the Fourth Proportional to 7,112.84, 10,668.78 and 2,182.05

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Solution

The fourth proportional to 7,112.84, 10,668.78 and 2,182.05 is: 3,272.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.84 : 10,668.78 = 2,182.05 : x
  2. Step 2: Convert to fraction form
    7,112.84/10,668.78 = 2,182.05/x
  3. Step 3: Cross multiply
    7,112.84x = 10,668.78 × 2,182.05
  4. Step 4: Simplify right side
    7,112.84x = 23,279,811.40
  5. Step 5: Solve for x
    x = 23,279,811.40/7,112.84
  6. Step 6: Final answer
    x = 3,272.93

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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.