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Finding the Fourth Proportional to 2,405.52, 3,320.73 and 1,968.12

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Solution

The fourth proportional to 2,405.52, 3,320.73 and 1,968.12 is: 2,716.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.52 : 3,320.73 = 1,968.12 : x
  2. Step 2: Convert to fraction form
    2,405.52/3,320.73 = 1,968.12/x
  3. Step 3: Cross multiply
    2,405.52x = 3,320.73 × 1,968.12
  4. Step 4: Simplify right side
    2,405.52x = 6,535,595.13
  5. Step 5: Solve for x
    x = 6,535,595.13/2,405.52
  6. Step 6: Final answer
    x = 2,716.92

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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.