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Finding the Fourth Proportional to 7,393.93, 11,085.43 and 3,493.78

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Solution

The fourth proportional to 7,393.93, 11,085.43 and 3,493.78 is: 5,238.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,393.93 : 11,085.43 = 3,493.78 : x
  2. Step 2: Convert to fraction form
    7,393.93/11,085.43 = 3,493.78/x
  3. Step 3: Cross multiply
    7,393.93x = 11,085.43 × 3,493.78
  4. Step 4: Simplify right side
    7,393.93x = 38,730,058.75
  5. Step 5: Solve for x
    x = 38,730,058.75/7,393.93
  6. Step 6: Final answer
    x = 5,238.09

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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.