Home / 3,686.83-5,530.40-1,221.86

Finding the Fourth Proportional to 3,686.83, 5,530.40 and 1,221.86

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Solution

The fourth proportional to 3,686.83, 5,530.40 and 1,221.86 is: 1,832.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.83 : 5,530.40 = 1,221.86 : x
  2. Step 2: Convert to fraction form
    3,686.83/5,530.40 = 1,221.86/x
  3. Step 3: Cross multiply
    3,686.83x = 5,530.40 × 1,221.86
  4. Step 4: Simplify right side
    3,686.83x = 6,757,368.43
  5. Step 5: Solve for x
    x = 6,757,368.43/3,686.83
  6. Step 6: Final answer
    x = 1,832.84

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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.