Home / 7,419.75-11,115.72-3,717.65

Finding the Fourth Proportional to 7,419.75, 11,115.72 and 3,717.65

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Solution

The fourth proportional to 7,419.75, 11,115.72 and 3,717.65 is: 5,569.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.75 : 11,115.72 = 3,717.65 : x
  2. Step 2: Convert to fraction form
    7,419.75/11,115.72 = 3,717.65/x
  3. Step 3: Cross multiply
    7,419.75x = 11,115.72 × 3,717.65
  4. Step 4: Simplify right side
    7,419.75x = 41,324,300.88
  5. Step 5: Solve for x
    x = 41,324,300.88/7,419.75
  6. Step 6: Final answer
    x = 5,569.50

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1.5x scale

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.