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Finding the Fourth Proportional to 7,305.78, 10,081.36 and 4,118.06

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Solution

The fourth proportional to 7,305.78, 10,081.36 and 4,118.06 is: 5,682.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,305.78 : 10,081.36 = 4,118.06 : x
  2. Step 2: Convert to fraction form
    7,305.78/10,081.36 = 4,118.06/x
  3. Step 3: Cross multiply
    7,305.78x = 10,081.36 × 4,118.06
  4. Step 4: Simplify right side
    7,305.78x = 41,515,645.36
  5. Step 5: Solve for x
    x = 41,515,645.36/7,305.78
  6. Step 6: Final answer
    x = 5,682.58

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