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Finding the Fourth Proportional to 8,610.36, 12,915.60 and 3,416.22

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Solution

The fourth proportional to 8,610.36, 12,915.60 and 3,416.22 is: 5,124.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.36 : 12,915.60 = 3,416.22 : x
  2. Step 2: Convert to fraction form
    8,610.36/12,915.60 = 3,416.22/x
  3. Step 3: Cross multiply
    8,610.36x = 12,915.60 × 3,416.22
  4. Step 4: Simplify right side
    8,610.36x = 44,122,531.03
  5. Step 5: Solve for x
    x = 44,122,531.03/8,610.36
  6. Step 6: Final answer
    x = 5,124.35

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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.