Home / 5,216.80-7,825.20-2,098.30

Finding the Fourth Proportional to 5,216.80, 7,825.20 and 2,098.30

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Solution

The fourth proportional to 5,216.80, 7,825.20 and 2,098.30 is: 3,147.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.80 : 7,825.20 = 2,098.30 : x
  2. Step 2: Convert to fraction form
    5,216.80/7,825.20 = 2,098.30/x
  3. Step 3: Cross multiply
    5,216.80x = 7,825.20 × 2,098.30
  4. Step 4: Simplify right side
    5,216.80x = 16,419,617.16
  5. Step 5: Solve for x
    x = 16,419,617.16/5,216.80
  6. Step 6: Final answer
    x = 3,147.45

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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.