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Finding the Fourth Proportional to 1,973.52, 2,960.12 and 1,107.60

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Solution

The fourth proportional to 1,973.52, 2,960.12 and 1,107.60 is: 1,661.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,973.52 : 2,960.12 = 1,107.60 : x
  2. Step 2: Convert to fraction form
    1,973.52/2,960.12 = 1,107.60/x
  3. Step 3: Cross multiply
    1,973.52x = 2,960.12 × 1,107.60
  4. Step 4: Simplify right side
    1,973.52x = 3,278,628.91
  5. Step 5: Solve for x
    x = 3,278,628.91/1,973.52
  6. Step 6: Final answer
    x = 1,661.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.