Home / 1,786.19-2,678.40-552.96

Finding the Fourth Proportional to 1,786.19, 2,678.40 and 552.96

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Solution

The fourth proportional to 1,786.19, 2,678.40 and 552.96 is: 829.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.19 : 2,678.40 = 552.96 : x
  2. Step 2: Convert to fraction form
    1,786.19/2,678.40 = 552.96/x
  3. Step 3: Cross multiply
    1,786.19x = 2,678.40 × 552.96
  4. Step 4: Simplify right side
    1,786.19x = 1,481,048.06
  5. Step 5: Solve for x
    x = 1,481,048.06/1,786.19
  6. Step 6: Final answer
    x = 829.17

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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.