Home / 1,217.40-1,826.11-351.74

Finding the Fourth Proportional to 1,217.40, 1,826.11 and 351.74

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Solution

The fourth proportional to 1,217.40, 1,826.11 and 351.74 is: 527.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.40 : 1,826.11 = 351.74 : x
  2. Step 2: Convert to fraction form
    1,217.40/1,826.11 = 351.74/x
  3. Step 3: Cross multiply
    1,217.40x = 1,826.11 × 351.74
  4. Step 4: Simplify right side
    1,217.40x = 642,315.93
  5. Step 5: Solve for x
    x = 642,315.93/1,217.40
  6. Step 6: Final answer
    x = 527.61

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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.