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Finding the Fourth Proportional to 1,980.97, 2,733.27 and 1,184.55

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Solution

The fourth proportional to 1,980.97, 2,733.27 and 1,184.55 is: 1,634.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.97 : 2,733.27 = 1,184.55 : x
  2. Step 2: Convert to fraction form
    1,980.97/2,733.27 = 1,184.55/x
  3. Step 3: Cross multiply
    1,980.97x = 2,733.27 × 1,184.55
  4. Step 4: Simplify right side
    1,980.97x = 3,237,688.15
  5. Step 5: Solve for x
    x = 3,237,688.15/1,980.97
  6. Step 6: Final answer
    x = 1,634.40

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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.