Home / 5,216.81-7,825.21-1,321.52

Finding the Fourth Proportional to 5,216.81, 7,825.21 and 1,321.52

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Solution

The fourth proportional to 5,216.81, 7,825.21 and 1,321.52 is: 1,982.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.81 : 7,825.21 = 1,321.52 : x
  2. Step 2: Convert to fraction form
    5,216.81/7,825.21 = 1,321.52/x
  3. Step 3: Cross multiply
    5,216.81x = 7,825.21 × 1,321.52
  4. Step 4: Simplify right side
    5,216.81x = 10,341,129.09
  5. Step 5: Solve for x
    x = 10,341,129.09/5,216.81
  6. Step 6: Final answer
    x = 1,982.27

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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.