Home / 1,428.20-1,966.97-1,326.14

Finding the Fourth Proportional to 1,428.20, 1,966.97 and 1,326.14

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Solution

The fourth proportional to 1,428.20, 1,966.97 and 1,326.14 is: 1,826.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428.20 : 1,966.97 = 1,326.14 : x
  2. Step 2: Convert to fraction form
    1,428.20/1,966.97 = 1,326.14/x
  3. Step 3: Cross multiply
    1,428.20x = 1,966.97 × 1,326.14
  4. Step 4: Simplify right side
    1,428.20x = 2,608,477.60
  5. Step 5: Solve for x
    x = 2,608,477.60/1,428.20
  6. Step 6: Final answer
    x = 1,826.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.