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Finding the Fourth Proportional to 8,612.02, 12,921.68 and 3,350.70

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Solution

The fourth proportional to 8,612.02, 12,921.68 and 3,350.70 is: 5,027.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.02 : 12,921.68 = 3,350.70 : x
  2. Step 2: Convert to fraction form
    8,612.02/12,921.68 = 3,350.70/x
  3. Step 3: Cross multiply
    8,612.02x = 12,921.68 × 3,350.70
  4. Step 4: Simplify right side
    8,612.02x = 43,296,673.18
  5. Step 5: Solve for x
    x = 43,296,673.18/8,612.02
  6. Step 6: Final answer
    x = 5,027.47

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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.