Home / 7,109.64-10,661.76-3,409.56

Finding the Fourth Proportional to 7,109.64, 10,661.76 and 3,409.56

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Solution

The fourth proportional to 7,109.64, 10,661.76 and 3,409.56 is: 5,113.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.64 : 10,661.76 = 3,409.56 : x
  2. Step 2: Convert to fraction form
    7,109.64/10,661.76 = 3,409.56/x
  3. Step 3: Cross multiply
    7,109.64x = 10,661.76 × 3,409.56
  4. Step 4: Simplify right side
    7,109.64x = 36,351,910.43
  5. Step 5: Solve for x
    x = 36,351,910.43/7,109.64
  6. Step 6: Final answer
    x = 5,113.05

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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.