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Finding the Fourth Proportional to 2,751.48, 3,792.86 and 2,160.99

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Solution

The fourth proportional to 2,751.48, 3,792.86 and 2,160.99 is: 2,978.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.48 : 3,792.86 = 2,160.99 : x
  2. Step 2: Convert to fraction form
    2,751.48/3,792.86 = 2,160.99/x
  3. Step 3: Cross multiply
    2,751.48x = 3,792.86 × 2,160.99
  4. Step 4: Simplify right side
    2,751.48x = 8,196,329.83
  5. Step 5: Solve for x
    x = 8,196,329.83/2,751.48
  6. Step 6: Final answer
    x = 2,978.88

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Why These Related Problems?

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