Home / 1,217.38-1,826.36-351.68

Finding the Fourth Proportional to 1,217.38, 1,826.36 and 351.68

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Solution

The fourth proportional to 1,217.38, 1,826.36 and 351.68 is: 527.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.38 : 1,826.36 = 351.68 : x
  2. Step 2: Convert to fraction form
    1,217.38/1,826.36 = 351.68/x
  3. Step 3: Cross multiply
    1,217.38x = 1,826.36 × 351.68
  4. Step 4: Simplify right side
    1,217.38x = 642,292.53
  5. Step 5: Solve for x
    x = 642,292.53/1,217.38
  6. Step 6: Final answer
    x = 527.60

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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.