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Finding the Fourth Proportional to 7,351.36, 11,005.17 and 4,420.78

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Solution

The fourth proportional to 7,351.36, 11,005.17 and 4,420.78 is: 6,618.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,351.36 : 11,005.17 = 4,420.78 : x
  2. Step 2: Convert to fraction form
    7,351.36/11,005.17 = 4,420.78/x
  3. Step 3: Cross multiply
    7,351.36x = 11,005.17 × 4,420.78
  4. Step 4: Simplify right side
    7,351.36x = 48,651,391.34
  5. Step 5: Solve for x
    x = 48,651,391.34/7,351.36
  6. Step 6: Final answer
    x = 6,618.01

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.