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Finding the Fourth Proportional to 8,472.08, 12,703.20 and 3,271.88

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Solution

The fourth proportional to 8,472.08, 12,703.20 and 3,271.88 is: 4,905.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.08 : 12,703.20 = 3,271.88 : x
  2. Step 2: Convert to fraction form
    8,472.08/12,703.20 = 3,271.88/x
  3. Step 3: Cross multiply
    8,472.08x = 12,703.20 × 3,271.88
  4. Step 4: Simplify right side
    8,472.08x = 41,563,346.02
  5. Step 5: Solve for x
    x = 41,563,346.02/8,472.08
  6. Step 6: Final answer
    x = 4,905.92

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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.