Home / 6,221.80-8,585.76-3,863.89

Finding the Fourth Proportional to 6,221.80, 8,585.76 and 3,863.89

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Solution

The fourth proportional to 6,221.80, 8,585.76 and 3,863.89 is: 5,331.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,221.80 : 8,585.76 = 3,863.89 : x
  2. Step 2: Convert to fraction form
    6,221.80/8,585.76 = 3,863.89/x
  3. Step 3: Cross multiply
    6,221.80x = 8,585.76 × 3,863.89
  4. Step 4: Simplify right side
    6,221.80x = 33,174,432.21
  5. Step 5: Solve for x
    x = 33,174,432.21/6,221.80
  6. Step 6: Final answer
    x = 5,331.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.