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Finding the Fourth Proportional to 2,778.54, 4,169.04 and 929.94

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Solution

The fourth proportional to 2,778.54, 4,169.04 and 929.94 is: 1,395.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.54 : 4,169.04 = 929.94 : x
  2. Step 2: Convert to fraction form
    2,778.54/4,169.04 = 929.94/x
  3. Step 3: Cross multiply
    2,778.54x = 4,169.04 × 929.94
  4. Step 4: Simplify right side
    2,778.54x = 3,876,957.06
  5. Step 5: Solve for x
    x = 3,876,957.06/2,778.54
  6. Step 6: Final answer
    x = 1,395.32

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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.