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Finding the Fourth Proportional to 4,787.69, 7,180.72 and 1,324.13

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Solution

The fourth proportional to 4,787.69, 7,180.72 and 1,324.13 is: 1,985.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.69 : 7,180.72 = 1,324.13 : x
  2. Step 2: Convert to fraction form
    4,787.69/7,180.72 = 1,324.13/x
  3. Step 3: Cross multiply
    4,787.69x = 7,180.72 × 1,324.13
  4. Step 4: Simplify right side
    4,787.69x = 9,508,167.56
  5. Step 5: Solve for x
    x = 9,508,167.56/4,787.69
  6. Step 6: Final answer
    x = 1,985.96

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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.