Home / 2,688.22-4,031.82-933.22

Finding the Fourth Proportional to 2,688.22, 4,031.82 and 933.22

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Solution

The fourth proportional to 2,688.22, 4,031.82 and 933.22 is: 1,399.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.22 : 4,031.82 = 933.22 : x
  2. Step 2: Convert to fraction form
    2,688.22/4,031.82 = 933.22/x
  3. Step 3: Cross multiply
    2,688.22x = 4,031.82 × 933.22
  4. Step 4: Simplify right side
    2,688.22x = 3,762,575.06
  5. Step 5: Solve for x
    x = 3,762,575.06/2,688.22
  6. Step 6: Final answer
    x = 1,399.65

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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.