Home / 1,217.81-1,826.40-351.92

Finding the Fourth Proportional to 1,217.81, 1,826.40 and 351.92

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Solution

The fourth proportional to 1,217.81, 1,826.40 and 351.92 is: 527.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.81 : 1,826.40 = 351.92 : x
  2. Step 2: Convert to fraction form
    1,217.81/1,826.40 = 351.92/x
  3. Step 3: Cross multiply
    1,217.81x = 1,826.40 × 351.92
  4. Step 4: Simplify right side
    1,217.81x = 642,746.69
  5. Step 5: Solve for x
    x = 642,746.69/1,217.81
  6. Step 6: Final answer
    x = 527.79

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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.