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Finding the Fourth Proportional to 2,796.86, 3,858.86 and 1,802.48

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Solution

The fourth proportional to 2,796.86, 3,858.86 and 1,802.48 is: 2,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,796.86 : 3,858.86 = 1,802.48 : x
  2. Step 2: Convert to fraction form
    2,796.86/3,858.86 = 1,802.48/x
  3. Step 3: Cross multiply
    2,796.86x = 3,858.86 × 1,802.48
  4. Step 4: Simplify right side
    2,796.86x = 6,955,517.97
  5. Step 5: Solve for x
    x = 6,955,517.97/2,796.86
  6. Step 6: Final answer
    x = 2,486.90

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1.5x scale

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.