Home / 1,217.69-1,826.13-487.07

Finding the Fourth Proportional to 1,217.69, 1,826.13 and 487.07

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Solution

The fourth proportional to 1,217.69, 1,826.13 and 487.07 is: 730.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.69 : 1,826.13 = 487.07 : x
  2. Step 2: Convert to fraction form
    1,217.69/1,826.13 = 487.07/x
  3. Step 3: Cross multiply
    1,217.69x = 1,826.13 × 487.07
  4. Step 4: Simplify right side
    1,217.69x = 889,453.14
  5. Step 5: Solve for x
    x = 889,453.14/1,217.69
  6. Step 6: Final answer
    x = 730.44

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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.