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Finding the Fourth Proportional to 8,607.64, 12,912.22 and 2,763.08

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Solution

The fourth proportional to 8,607.64, 12,912.22 and 2,763.08 is: 4,144.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.64 : 12,912.22 = 2,763.08 : x
  2. Step 2: Convert to fraction form
    8,607.64/12,912.22 = 2,763.08/x
  3. Step 3: Cross multiply
    8,607.64x = 12,912.22 × 2,763.08
  4. Step 4: Simplify right side
    8,607.64x = 35,677,496.84
  5. Step 5: Solve for x
    x = 35,677,496.84/8,607.64
  6. Step 6: Final answer
    x = 4,144.86

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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.