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Finding the Fourth Proportional to 8,915.88, 12,299.64 and 6,522.12

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Solution

The fourth proportional to 8,915.88, 12,299.64 and 6,522.12 is: 8,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.88 : 12,299.64 = 6,522.12 : x
  2. Step 2: Convert to fraction form
    8,915.88/12,299.64 = 6,522.12/x
  3. Step 3: Cross multiply
    8,915.88x = 12,299.64 × 6,522.12
  4. Step 4: Simplify right side
    8,915.88x = 80,219,728.04
  5. Step 5: Solve for x
    x = 80,219,728.04/8,915.88
  6. Step 6: Final answer
    x = 8,997.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.