Home / 5,217.72-7,816.98-2,620.60

Finding the Fourth Proportional to 5,217.72, 7,816.98 and 2,620.60

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Solution

The fourth proportional to 5,217.72, 7,816.98 and 2,620.60 is: 3,926.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.72 : 7,816.98 = 2,620.60 : x
  2. Step 2: Convert to fraction form
    5,217.72/7,816.98 = 2,620.60/x
  3. Step 3: Cross multiply
    5,217.72x = 7,816.98 × 2,620.60
  4. Step 4: Simplify right side
    5,217.72x = 20,485,177.79
  5. Step 5: Solve for x
    x = 20,485,177.79/5,217.72
  6. Step 6: Final answer
    x = 3,926.08

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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.