Home / 1,217.62-1,826.40-351.91

Finding the Fourth Proportional to 1,217.62, 1,826.40 and 351.91

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Solution

The fourth proportional to 1,217.62, 1,826.40 and 351.91 is: 527.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.62 : 1,826.40 = 351.91 : x
  2. Step 2: Convert to fraction form
    1,217.62/1,826.40 = 351.91/x
  3. Step 3: Cross multiply
    1,217.62x = 1,826.40 × 351.91
  4. Step 4: Simplify right side
    1,217.62x = 642,719.29
  5. Step 5: Solve for x
    x = 642,719.29/1,217.62
  6. Step 6: Final answer
    x = 527.85

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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.