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Finding the Fourth Proportional to 6,641.27, 9,945.45 and 3,859.50

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Solution

The fourth proportional to 6,641.27, 9,945.45 and 3,859.50 is: 5,779.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.27 : 9,945.45 = 3,859.50 : x
  2. Step 2: Convert to fraction form
    6,641.27/9,945.45 = 3,859.50/x
  3. Step 3: Cross multiply
    6,641.27x = 9,945.45 × 3,859.50
  4. Step 4: Simplify right side
    6,641.27x = 38,384,464.28
  5. Step 5: Solve for x
    x = 38,384,464.28/6,641.27
  6. Step 6: Final answer
    x = 5,779.69

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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.