Home / 1,403.27-2,104.61-478.82

Finding the Fourth Proportional to 1,403.27, 2,104.61 and 478.82

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Solution

The fourth proportional to 1,403.27, 2,104.61 and 478.82 is: 718.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.27 : 2,104.61 = 478.82 : x
  2. Step 2: Convert to fraction form
    1,403.27/2,104.61 = 478.82/x
  3. Step 3: Cross multiply
    1,403.27x = 2,104.61 × 478.82
  4. Step 4: Simplify right side
    1,403.27x = 1,007,716.44
  5. Step 5: Solve for x
    x = 1,007,716.44/1,403.27
  6. Step 6: Final answer
    x = 718.12

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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.