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Finding the Fourth Proportional to 8,679.08, 13,015.30 and 3,748.32

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Solution

The fourth proportional to 8,679.08, 13,015.30 and 3,748.32 is: 5,621.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.08 : 13,015.30 = 3,748.32 : x
  2. Step 2: Convert to fraction form
    8,679.08/13,015.30 = 3,748.32/x
  3. Step 3: Cross multiply
    8,679.08x = 13,015.30 × 3,748.32
  4. Step 4: Simplify right side
    8,679.08x = 48,785,509.30
  5. Step 5: Solve for x
    x = 48,785,509.30/8,679.08
  6. Step 6: Final answer
    x = 5,621.05

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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.