Home / 1,218.21-1,828.13-448.71

Finding the Fourth Proportional to 1,218.21, 1,828.13 and 448.71

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Solution

The fourth proportional to 1,218.21, 1,828.13 and 448.71 is: 673.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.21 : 1,828.13 = 448.71 : x
  2. Step 2: Convert to fraction form
    1,218.21/1,828.13 = 448.71/x
  3. Step 3: Cross multiply
    1,218.21x = 1,828.13 × 448.71
  4. Step 4: Simplify right side
    1,218.21x = 820,297.97
  5. Step 5: Solve for x
    x = 820,297.97/1,218.21
  6. Step 6: Final answer
    x = 673.36

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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.