Home / 8,272.48-12,408.72-5,188

Finding the Fourth Proportional to 8,272.48, 12,408.72 and 5,188

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Solution

The fourth proportional to 8,272.48, 12,408.72 and 5,188 is: 7,782

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.48 : 12,408.72 = 5,188 : x
  2. Step 2: Convert to fraction form
    8,272.48/12,408.72 = 5,188/x
  3. Step 3: Cross multiply
    8,272.48x = 12,408.72 × 5,188
  4. Step 4: Simplify right side
    8,272.48x = 64,376,439.36
  5. Step 5: Solve for x
    x = 64,376,439.36/8,272.48
  6. Step 6: Final answer
    x = 7,782

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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.