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Finding the Fourth Proportional to 8,602.64, 12,902.19 and 3,921.32

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Solution

The fourth proportional to 8,602.64, 12,902.19 and 3,921.32 is: 5,881.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.64 : 12,902.19 = 3,921.32 : x
  2. Step 2: Convert to fraction form
    8,602.64/12,902.19 = 3,921.32/x
  3. Step 3: Cross multiply
    8,602.64x = 12,902.19 × 3,921.32
  4. Step 4: Simplify right side
    8,602.64x = 50,593,551.18
  5. Step 5: Solve for x
    x = 50,593,551.18/8,602.64
  6. Step 6: Final answer
    x = 5,881.17

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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.