Home / 7,176.40-10,772.70-5,540.20

Finding the Fourth Proportional to 7,176.40, 10,772.70 and 5,540.20

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Solution

The fourth proportional to 7,176.40, 10,772.70 and 5,540.20 is: 8,316.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,176.40 : 10,772.70 = 5,540.20 : x
  2. Step 2: Convert to fraction form
    7,176.40/10,772.70 = 5,540.20/x
  3. Step 3: Cross multiply
    7,176.40x = 10,772.70 × 5,540.20
  4. Step 4: Simplify right side
    7,176.40x = 59,682,912.54
  5. Step 5: Solve for x
    x = 59,682,912.54/7,176.40
  6. Step 6: Final answer
    x = 8,316.55

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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.