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Finding the Fourth Proportional to 8,237.48, 12,347.49 and 2,689.32

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Solution

The fourth proportional to 8,237.48, 12,347.49 and 2,689.32 is: 4,031.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,237.48 : 12,347.49 = 2,689.32 : x
  2. Step 2: Convert to fraction form
    8,237.48/12,347.49 = 2,689.32/x
  3. Step 3: Cross multiply
    8,237.48x = 12,347.49 × 2,689.32
  4. Step 4: Simplify right side
    8,237.48x = 33,206,408.19
  5. Step 5: Solve for x
    x = 33,206,408.19/8,237.48
  6. Step 6: Final answer
    x = 4,031.14

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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.