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Finding the Fourth Proportional to 8,620.84, 12,936.93 and 4,727.98

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Solution

The fourth proportional to 8,620.84, 12,936.93 and 4,727.98 is: 7,095.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.84 : 12,936.93 = 4,727.98 : x
  2. Step 2: Convert to fraction form
    8,620.84/12,936.93 = 4,727.98/x
  3. Step 3: Cross multiply
    8,620.84x = 12,936.93 × 4,727.98
  4. Step 4: Simplify right side
    8,620.84x = 61,165,546.30
  5. Step 5: Solve for x
    x = 61,165,546.30/8,620.84
  6. Step 6: Final answer
    x = 7,095.08

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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.