Home / 7,724.20-10,659.36-4,187.38

Finding the Fourth Proportional to 7,724.20, 10,659.36 and 4,187.38

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Solution

The fourth proportional to 7,724.20, 10,659.36 and 4,187.38 is: 5,778.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,724.20 : 10,659.36 = 4,187.38 : x
  2. Step 2: Convert to fraction form
    7,724.20/10,659.36 = 4,187.38/x
  3. Step 3: Cross multiply
    7,724.20x = 10,659.36 × 4,187.38
  4. Step 4: Simplify right side
    7,724.20x = 44,634,790.88
  5. Step 5: Solve for x
    x = 44,634,790.88/7,724.20
  6. Step 6: Final answer
    x = 5,778.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.