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Finding the Fourth Proportional to 5,585.91, 8,380.23 and 3,945.66

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Solution

The fourth proportional to 5,585.91, 8,380.23 and 3,945.66 is: 5,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,585.91 : 8,380.23 = 3,945.66 : x
  2. Step 2: Convert to fraction form
    5,585.91/8,380.23 = 3,945.66/x
  3. Step 3: Cross multiply
    5,585.91x = 8,380.23 × 3,945.66
  4. Step 4: Simplify right side
    5,585.91x = 33,065,538.30
  5. Step 5: Solve for x
    x = 33,065,538.30/5,585.91
  6. Step 6: Final answer
    x = 5,919.45

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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.