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Finding the Fourth Proportional to 8,418.94, 12,628.41 and 2,575.40

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Solution

The fourth proportional to 8,418.94, 12,628.41 and 2,575.40 is: 3,863.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.94 : 12,628.41 = 2,575.40 : x
  2. Step 2: Convert to fraction form
    8,418.94/12,628.41 = 2,575.40/x
  3. Step 3: Cross multiply
    8,418.94x = 12,628.41 × 2,575.40
  4. Step 4: Simplify right side
    8,418.94x = 32,523,134.31
  5. Step 5: Solve for x
    x = 32,523,134.31/8,418.94
  6. Step 6: Final answer
    x = 3,863.09

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Similar ratio
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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.