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Finding the Fourth Proportional to 8,648.91, 12,965.15 and 4,261.23

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Solution

The fourth proportional to 8,648.91, 12,965.15 and 4,261.23 is: 6,387.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.91 : 12,965.15 = 4,261.23 : x
  2. Step 2: Convert to fraction form
    8,648.91/12,965.15 = 4,261.23/x
  3. Step 3: Cross multiply
    8,648.91x = 12,965.15 × 4,261.23
  4. Step 4: Simplify right side
    8,648.91x = 55,247,496.79
  5. Step 5: Solve for x
    x = 55,247,496.79/8,648.91
  6. Step 6: Final answer
    x = 6,387.80

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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.