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Finding the Fourth Proportional to 2,734.48, 4,102.33 and 786.54

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Solution

The fourth proportional to 2,734.48, 4,102.33 and 786.54 is: 1,179.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,734.48 : 4,102.33 = 786.54 : x
  2. Step 2: Convert to fraction form
    2,734.48/4,102.33 = 786.54/x
  3. Step 3: Cross multiply
    2,734.48x = 4,102.33 × 786.54
  4. Step 4: Simplify right side
    2,734.48x = 3,226,646.64
  5. Step 5: Solve for x
    x = 3,226,646.64/2,734.48
  6. Step 6: Final answer
    x = 1,179.99

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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.