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Finding the Fourth Proportional to 8,477.84, 12,712.32 and 3,546.56

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Solution

The fourth proportional to 8,477.84, 12,712.32 and 3,546.56 is: 5,317.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,477.84 : 12,712.32 = 3,546.56 : x
  2. Step 2: Convert to fraction form
    8,477.84/12,712.32 = 3,546.56/x
  3. Step 3: Cross multiply
    8,477.84x = 12,712.32 × 3,546.56
  4. Step 4: Simplify right side
    8,477.84x = 45,085,005.62
  5. Step 5: Solve for x
    x = 45,085,005.62/8,477.84
  6. Step 6: Final answer
    x = 5,317.98

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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.