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Finding the Fourth Proportional to 11.58, 17.38 and 4.36

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Solution

The fourth proportional to 11.58, 17.38 and 4.36 is: 6.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.58 : 17.38 = 4.36 : x
  2. Step 2: Convert to fraction form
    11.58/17.38 = 4.36/x
  3. Step 3: Cross multiply
    11.58x = 17.38 × 4.36
  4. Step 4: Simplify right side
    11.58x = 75.72
  5. Step 5: Solve for x
    x = 75.72/11.58
  6. Step 6: Final answer
    x = 6.54

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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.