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Finding the Fourth Proportional to 8,993.21, 13,492.10 and 3,149.67

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Solution

The fourth proportional to 8,993.21, 13,492.10 and 3,149.67 is: 4,725.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,993.21 : 13,492.10 = 3,149.67 : x
  2. Step 2: Convert to fraction form
    8,993.21/13,492.10 = 3,149.67/x
  3. Step 3: Cross multiply
    8,993.21x = 13,492.10 × 3,149.67
  4. Step 4: Simplify right side
    8,993.21x = 42,495,646.86
  5. Step 5: Solve for x
    x = 42,495,646.86/8,993.21
  6. Step 6: Final answer
    x = 4,725.31

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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.