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Finding the Fourth Proportional to 8,669.49, 12,994.30 and 4,229.47

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Solution

The fourth proportional to 8,669.49, 12,994.30 and 4,229.47 is: 6,339.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.49 : 12,994.30 = 4,229.47 : x
  2. Step 2: Convert to fraction form
    8,669.49/12,994.30 = 4,229.47/x
  3. Step 3: Cross multiply
    8,669.49x = 12,994.30 × 4,229.47
  4. Step 4: Simplify right side
    8,669.49x = 54,959,002.02
  5. Step 5: Solve for x
    x = 54,959,002.02/8,669.49
  6. Step 6: Final answer
    x = 6,339.36

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1.5x scale

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.