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Finding the Fourth Proportional to 8,606.34, 12,907.80 and 3,925.08

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Solution

The fourth proportional to 8,606.34, 12,907.80 and 3,925.08 is: 5,886.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.34 : 12,907.80 = 3,925.08 : x
  2. Step 2: Convert to fraction form
    8,606.34/12,907.80 = 3,925.08/x
  3. Step 3: Cross multiply
    8,606.34x = 12,907.80 × 3,925.08
  4. Step 4: Simplify right side
    8,606.34x = 50,664,147.62
  5. Step 5: Solve for x
    x = 50,664,147.62/8,606.34
  6. Step 6: Final answer
    x = 5,886.84

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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.