Home / 1,952.51-2,929.92-720.79

Finding the Fourth Proportional to 1,952.51, 2,929.92 and 720.79

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Solution

The fourth proportional to 1,952.51, 2,929.92 and 720.79 is: 1,081.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,952.51 : 2,929.92 = 720.79 : x
  2. Step 2: Convert to fraction form
    1,952.51/2,929.92 = 720.79/x
  3. Step 3: Cross multiply
    1,952.51x = 2,929.92 × 720.79
  4. Step 4: Simplify right side
    1,952.51x = 2,111,857.04
  5. Step 5: Solve for x
    x = 2,111,857.04/1,952.51
  6. Step 6: Final answer
    x = 1,081.61

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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.