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Finding the Fourth Proportional to 8,338.84, 12,508.28 and 3,408.47

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Solution

The fourth proportional to 8,338.84, 12,508.28 and 3,408.47 is: 5,112.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,338.84 : 12,508.28 = 3,408.47 : x
  2. Step 2: Convert to fraction form
    8,338.84/12,508.28 = 3,408.47/x
  3. Step 3: Cross multiply
    8,338.84x = 12,508.28 × 3,408.47
  4. Step 4: Simplify right side
    8,338.84x = 42,634,111.36
  5. Step 5: Solve for x
    x = 42,634,111.36/8,338.84
  6. Step 6: Final answer
    x = 5,112.72

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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.