Home / 1,403.13-2,106.60-818.73

Finding the Fourth Proportional to 1,403.13, 2,106.60 and 818.73

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Solution

The fourth proportional to 1,403.13, 2,106.60 and 818.73 is: 1,229.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.13 : 2,106.60 = 818.73 : x
  2. Step 2: Convert to fraction form
    1,403.13/2,106.60 = 818.73/x
  3. Step 3: Cross multiply
    1,403.13x = 2,106.60 × 818.73
  4. Step 4: Simplify right side
    1,403.13x = 1,724,736.62
  5. Step 5: Solve for x
    x = 1,724,736.62/1,403.13
  6. Step 6: Final answer
    x = 1,229.21

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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.