Home / 3,854.08-5,781.37-1,221.69

Finding the Fourth Proportional to 3,854.08, 5,781.37 and 1,221.69

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Solution

The fourth proportional to 3,854.08, 5,781.37 and 1,221.69 is: 1,832.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,854.08 : 5,781.37 = 1,221.69 : x
  2. Step 2: Convert to fraction form
    3,854.08/5,781.37 = 1,221.69/x
  3. Step 3: Cross multiply
    3,854.08x = 5,781.37 × 1,221.69
  4. Step 4: Simplify right side
    3,854.08x = 7,063,041.92
  5. Step 5: Solve for x
    x = 7,063,041.92/3,854.08
  6. Step 6: Final answer
    x = 1,832.61

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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.