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Finding the Fourth Proportional to 7,847.86, 11,773.68 and 2,917.66

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Solution

The fourth proportional to 7,847.86, 11,773.68 and 2,917.66 is: 4,377.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,847.86 : 11,773.68 = 2,917.66 : x
  2. Step 2: Convert to fraction form
    7,847.86/11,773.68 = 2,917.66/x
  3. Step 3: Cross multiply
    7,847.86x = 11,773.68 × 2,917.66
  4. Step 4: Simplify right side
    7,847.86x = 34,351,595.19
  5. Step 5: Solve for x
    x = 34,351,595.19/7,847.86
  6. Step 6: Final answer
    x = 4,377.19

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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.