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Finding the Fourth Proportional to 8,168.90, 12,251.88 and 2,165.02

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Solution

The fourth proportional to 8,168.90, 12,251.88 and 2,165.02 is: 3,247.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.90 : 12,251.88 = 2,165.02 : x
  2. Step 2: Convert to fraction form
    8,168.90/12,251.88 = 2,165.02/x
  3. Step 3: Cross multiply
    8,168.90x = 12,251.88 × 2,165.02
  4. Step 4: Simplify right side
    8,168.90x = 26,525,509.77
  5. Step 5: Solve for x
    x = 26,525,509.77/8,168.90
  6. Step 6: Final answer
    x = 3,247.13

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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.