Home / 5,135.88-7,703.82-1,438.22

Finding the Fourth Proportional to 5,135.88, 7,703.82 and 1,438.22

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Solution

The fourth proportional to 5,135.88, 7,703.82 and 1,438.22 is: 2,157.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.88 : 7,703.82 = 1,438.22 : x
  2. Step 2: Convert to fraction form
    5,135.88/7,703.82 = 1,438.22/x
  3. Step 3: Cross multiply
    5,135.88x = 7,703.82 × 1,438.22
  4. Step 4: Simplify right side
    5,135.88x = 11,079,776.78
  5. Step 5: Solve for x
    x = 11,079,776.78/5,135.88
  6. Step 6: Final answer
    x = 2,157.33

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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.