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Finding the Fourth Proportional to 5,781.86, 8,672.79 and 3,314.99

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Solution

The fourth proportional to 5,781.86, 8,672.79 and 3,314.99 is: 4,972.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,781.86 : 8,672.79 = 3,314.99 : x
  2. Step 2: Convert to fraction form
    5,781.86/8,672.79 = 3,314.99/x
  3. Step 3: Cross multiply
    5,781.86x = 8,672.79 × 3,314.99
  4. Step 4: Simplify right side
    5,781.86x = 28,750,168.76
  5. Step 5: Solve for x
    x = 28,750,168.76/5,781.86
  6. Step 6: Final answer
    x = 4,972.48

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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.