Home / 5,327.22-7,989.75-1,431.66

Finding the Fourth Proportional to 5,327.22, 7,989.75 and 1,431.66

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Solution

The fourth proportional to 5,327.22, 7,989.75 and 1,431.66 is: 2,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,327.22 : 7,989.75 = 1,431.66 : x
  2. Step 2: Convert to fraction form
    5,327.22/7,989.75 = 1,431.66/x
  3. Step 3: Cross multiply
    5,327.22x = 7,989.75 × 1,431.66
  4. Step 4: Simplify right side
    5,327.22x = 11,438,605.49
  5. Step 5: Solve for x
    x = 11,438,605.49/5,327.22
  6. Step 6: Final answer
    x = 2,147.20

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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.