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Finding the Fourth Proportional to 1,969.76, 2,718.21 and 1,073.45

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Solution

The fourth proportional to 1,969.76, 2,718.21 and 1,073.45 is: 1,481.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.76 : 2,718.21 = 1,073.45 : x
  2. Step 2: Convert to fraction form
    1,969.76/2,718.21 = 1,073.45/x
  3. Step 3: Cross multiply
    1,969.76x = 2,718.21 × 1,073.45
  4. Step 4: Simplify right side
    1,969.76x = 2,917,862.52
  5. Step 5: Solve for x
    x = 2,917,862.52/1,969.76
  6. Step 6: Final answer
    x = 1,481.33

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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.