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Finding the Fourth Proportional to 8,714.21, 13,074.95 and 3,787.99

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Solution

The fourth proportional to 8,714.21, 13,074.95 and 3,787.99 is: 5,683.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,714.21 : 13,074.95 = 3,787.99 : x
  2. Step 2: Convert to fraction form
    8,714.21/13,074.95 = 3,787.99/x
  3. Step 3: Cross multiply
    8,714.21x = 13,074.95 × 3,787.99
  4. Step 4: Simplify right side
    8,714.21x = 49,527,756.63
  5. Step 5: Solve for x
    x = 49,527,756.63/8,714.21
  6. Step 6: Final answer
    x = 5,683.57

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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.