Home / 1,428.69-2,141.67-550.56

Finding the Fourth Proportional to 1,428.69, 2,141.67 and 550.56

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Solution

The fourth proportional to 1,428.69, 2,141.67 and 550.56 is: 825.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428.69 : 2,141.67 = 550.56 : x
  2. Step 2: Convert to fraction form
    1,428.69/2,141.67 = 550.56/x
  3. Step 3: Cross multiply
    1,428.69x = 2,141.67 × 550.56
  4. Step 4: Simplify right side
    1,428.69x = 1,179,117.84
  5. Step 5: Solve for x
    x = 1,179,117.84/1,428.69
  6. Step 6: Final answer
    x = 825.31

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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.