Home / 7,158.86-10,728.39-5,168.62

Finding the Fourth Proportional to 7,158.86, 10,728.39 and 5,168.62

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Solution

The fourth proportional to 7,158.86, 10,728.39 and 5,168.62 is: 7,745.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158.86 : 10,728.39 = 5,168.62 : x
  2. Step 2: Convert to fraction form
    7,158.86/10,728.39 = 5,168.62/x
  3. Step 3: Cross multiply
    7,158.86x = 10,728.39 × 5,168.62
  4. Step 4: Simplify right side
    7,158.86x = 55,450,971.12
  5. Step 5: Solve for x
    x = 55,450,971.12/7,158.86
  6. Step 6: Final answer
    x = 7,745.78

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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.