Home / 1,217.17-1,826.64-486.95

Finding the Fourth Proportional to 1,217.17, 1,826.64 and 486.95

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Solution

The fourth proportional to 1,217.17, 1,826.64 and 486.95 is: 730.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.17 : 1,826.64 = 486.95 : x
  2. Step 2: Convert to fraction form
    1,217.17/1,826.64 = 486.95/x
  3. Step 3: Cross multiply
    1,217.17x = 1,826.64 × 486.95
  4. Step 4: Simplify right side
    1,217.17x = 889,479.91
  5. Step 5: Solve for x
    x = 889,479.91/1,217.17
  6. Step 6: Final answer
    x = 730.78

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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.