Home / 1,967.40-2,952.36-1,187.28

Finding the Fourth Proportional to 1,967.40, 2,952.36 and 1,187.28

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Solution

The fourth proportional to 1,967.40, 2,952.36 and 1,187.28 is: 1,781.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,967.40 : 2,952.36 = 1,187.28 : x
  2. Step 2: Convert to fraction form
    1,967.40/2,952.36 = 1,187.28/x
  3. Step 3: Cross multiply
    1,967.40x = 2,952.36 × 1,187.28
  4. Step 4: Simplify right side
    1,967.40x = 3,505,277.98
  5. Step 5: Solve for x
    x = 3,505,277.98/1,967.40
  6. Step 6: Final answer
    x = 1,781.68

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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.