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Finding the Fourth Proportional to 8,889.32, 13,333.97 and 7,861.43

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Solution

The fourth proportional to 8,889.32, 13,333.97 and 7,861.43 is: 11,792.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.32 : 13,333.97 = 7,861.43 : x
  2. Step 2: Convert to fraction form
    8,889.32/13,333.97 = 7,861.43/x
  3. Step 3: Cross multiply
    8,889.32x = 13,333.97 × 7,861.43
  4. Step 4: Simplify right side
    8,889.32x = 104,823,965.80
  5. Step 5: Solve for x
    x = 104,823,965.80/8,889.32
  6. Step 6: Final answer
    x = 11,792.13

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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.