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Finding the Fourth Proportional to 8,184.52, 12,278.67 and 2,990.44

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Solution

The fourth proportional to 8,184.52, 12,278.67 and 2,990.44 is: 4,486.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,184.52 : 12,278.67 = 2,990.44 : x
  2. Step 2: Convert to fraction form
    8,184.52/12,278.67 = 2,990.44/x
  3. Step 3: Cross multiply
    8,184.52x = 12,278.67 × 2,990.44
  4. Step 4: Simplify right side
    8,184.52x = 36,718,625.91
  5. Step 5: Solve for x
    x = 36,718,625.91/8,184.52
  6. Step 6: Final answer
    x = 4,486.35

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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.