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Finding the Fourth Proportional to 9,243.84, 13,847.40 and 8,487.84

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Solution

The fourth proportional to 9,243.84, 13,847.40 and 8,487.84 is: 12,714.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,243.84 : 13,847.40 = 8,487.84 : x
  2. Step 2: Convert to fraction form
    9,243.84/13,847.40 = 8,487.84/x
  3. Step 3: Cross multiply
    9,243.84x = 13,847.40 × 8,487.84
  4. Step 4: Simplify right side
    9,243.84x = 117,534,515.62
  5. Step 5: Solve for x
    x = 117,534,515.62/9,243.84
  6. Step 6: Final answer
    x = 12,714.90

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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.