Home / 3,653.56-5,479.19-1,187.81

Finding the Fourth Proportional to 3,653.56, 5,479.19 and 1,187.81

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Solution

The fourth proportional to 3,653.56, 5,479.19 and 1,187.81 is: 1,781.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.56 : 5,479.19 = 1,187.81 : x
  2. Step 2: Convert to fraction form
    3,653.56/5,479.19 = 1,187.81/x
  3. Step 3: Cross multiply
    3,653.56x = 5,479.19 × 1,187.81
  4. Step 4: Simplify right side
    3,653.56x = 6,508,236.67
  5. Step 5: Solve for x
    x = 6,508,236.67/3,653.56
  6. Step 6: Final answer
    x = 1,781.34

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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.