Home / 7,708.20-11,540.70-6,930.60

Finding the Fourth Proportional to 7,708.20, 11,540.70 and 6,930.60

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Solution

The fourth proportional to 7,708.20, 11,540.70 and 6,930.60 is: 10,376.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,708.20 : 11,540.70 = 6,930.60 : x
  2. Step 2: Convert to fraction form
    7,708.20/11,540.70 = 6,930.60/x
  3. Step 3: Cross multiply
    7,708.20x = 11,540.70 × 6,930.60
  4. Step 4: Simplify right side
    7,708.20x = 79,983,975.42
  5. Step 5: Solve for x
    x = 79,983,975.42/7,708.20
  6. Step 6: Final answer
    x = 10,376.48

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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.