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Finding the Fourth Proportional to 5,375.79, 7,418.38 and 2,985.89

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Solution

The fourth proportional to 5,375.79, 7,418.38 and 2,985.89 is: 4,120.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,375.79 : 7,418.38 = 2,985.89 : x
  2. Step 2: Convert to fraction form
    5,375.79/7,418.38 = 2,985.89/x
  3. Step 3: Cross multiply
    5,375.79x = 7,418.38 × 2,985.89
  4. Step 4: Simplify right side
    5,375.79x = 22,150,466.66
  5. Step 5: Solve for x
    x = 22,150,466.66/5,375.79
  6. Step 6: Final answer
    x = 4,120.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.