Home / 7,680.88-11,516.01-3,923.49

Finding the Fourth Proportional to 7,680.88, 11,516.01 and 3,923.49

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Solution

The fourth proportional to 7,680.88, 11,516.01 and 3,923.49 is: 5,882.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.88 : 11,516.01 = 3,923.49 : x
  2. Step 2: Convert to fraction form
    7,680.88/11,516.01 = 3,923.49/x
  3. Step 3: Cross multiply
    7,680.88x = 11,516.01 × 3,923.49
  4. Step 4: Simplify right side
    7,680.88x = 45,182,978.55
  5. Step 5: Solve for x
    x = 45,182,978.55/7,680.88
  6. Step 6: Final answer
    x = 5,882.53

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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.