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Finding the Fourth Proportional to 8,631.23, 12,953.93 and 4,472.51

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Solution

The fourth proportional to 8,631.23, 12,953.93 and 4,472.51 is: 6,712.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.23 : 12,953.93 = 4,472.51 : x
  2. Step 2: Convert to fraction form
    8,631.23/12,953.93 = 4,472.51/x
  3. Step 3: Cross multiply
    8,631.23x = 12,953.93 × 4,472.51
  4. Step 4: Simplify right side
    8,631.23x = 57,936,494.33
  5. Step 5: Solve for x
    x = 57,936,494.33/8,631.23
  6. Step 6: Final answer
    x = 6,712.43

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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.