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Finding the Fourth Proportional to 1,426.92, 1,969.19 and 797.48

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Solution

The fourth proportional to 1,426.92, 1,969.19 and 797.48 is: 1,100.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.92 : 1,969.19 = 797.48 : x
  2. Step 2: Convert to fraction form
    1,426.92/1,969.19 = 797.48/x
  3. Step 3: Cross multiply
    1,426.92x = 1,969.19 × 797.48
  4. Step 4: Simplify right side
    1,426.92x = 1,570,389.64
  5. Step 5: Solve for x
    x = 1,570,389.64/1,426.92
  6. Step 6: Final answer
    x = 1,100.54

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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.