Home / 1,485.14-2,227.78-511.26

Finding the Fourth Proportional to 1,485.14, 2,227.78 and 511.26

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Solution

The fourth proportional to 1,485.14, 2,227.78 and 511.26 is: 766.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.14 : 2,227.78 = 511.26 : x
  2. Step 2: Convert to fraction form
    1,485.14/2,227.78 = 511.26/x
  3. Step 3: Cross multiply
    1,485.14x = 2,227.78 × 511.26
  4. Step 4: Simplify right side
    1,485.14x = 1,138,974.80
  5. Step 5: Solve for x
    x = 1,138,974.80/1,485.14
  6. Step 6: Final answer
    x = 766.91

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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.