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Finding the Fourth Proportional to 8,920.57, 13,381 and 4,241.07

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Solution

The fourth proportional to 8,920.57, 13,381 and 4,241.07 is: 6,361.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.57 : 13,381 = 4,241.07 : x
  2. Step 2: Convert to fraction form
    8,920.57/13,381 = 4,241.07/x
  3. Step 3: Cross multiply
    8,920.57x = 13,381 × 4,241.07
  4. Step 4: Simplify right side
    8,920.57x = 56,749,757.67
  5. Step 5: Solve for x
    x = 56,749,757.67/8,920.57
  6. Step 6: Final answer
    x = 6,361.67

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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.