Home / 1,972.49-2,958.66-511.72

Finding the Fourth Proportional to 1,972.49, 2,958.66 and 511.72

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Solution

The fourth proportional to 1,972.49, 2,958.66 and 511.72 is: 767.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.49 : 2,958.66 = 511.72 : x
  2. Step 2: Convert to fraction form
    1,972.49/2,958.66 = 511.72/x
  3. Step 3: Cross multiply
    1,972.49x = 2,958.66 × 511.72
  4. Step 4: Simplify right side
    1,972.49x = 1,513,998.10
  5. Step 5: Solve for x
    x = 1,513,998.10/1,972.49
  6. Step 6: Final answer
    x = 767.56

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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.