Home / 1,217.38-1,826.34-351.63

Finding the Fourth Proportional to 1,217.38, 1,826.34 and 351.63

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Solution

The fourth proportional to 1,217.38, 1,826.34 and 351.63 is: 527.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.38 : 1,826.34 = 351.63 : x
  2. Step 2: Convert to fraction form
    1,217.38/1,826.34 = 351.63/x
  3. Step 3: Cross multiply
    1,217.38x = 1,826.34 × 351.63
  4. Step 4: Simplify right side
    1,217.38x = 642,195.93
  5. Step 5: Solve for x
    x = 642,195.93/1,217.38
  6. Step 6: Final answer
    x = 527.52

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Double scale
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1.5x scale

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.