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Finding the Fourth Proportional to 8,648.02, 12,979.05 and 4,489.35

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Solution

The fourth proportional to 8,648.02, 12,979.05 and 4,489.35 is: 6,737.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.02 : 12,979.05 = 4,489.35 : x
  2. Step 2: Convert to fraction form
    8,648.02/12,979.05 = 4,489.35/x
  3. Step 3: Cross multiply
    8,648.02x = 12,979.05 × 4,489.35
  4. Step 4: Simplify right side
    8,648.02x = 58,267,498.12
  5. Step 5: Solve for x
    x = 58,267,498.12/8,648.02
  6. Step 6: Final answer
    x = 6,737.67

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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.