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Finding the Fourth Proportional to 8,372.40, 12,558.24 and 2,216.40

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Solution

The fourth proportional to 8,372.40, 12,558.24 and 2,216.40 is: 3,324.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,372.40 : 12,558.24 = 2,216.40 : x
  2. Step 2: Convert to fraction form
    8,372.40/12,558.24 = 2,216.40/x
  3. Step 3: Cross multiply
    8,372.40x = 12,558.24 × 2,216.40
  4. Step 4: Simplify right side
    8,372.40x = 27,834,083.14
  5. Step 5: Solve for x
    x = 27,834,083.14/8,372.40
  6. Step 6: Final answer
    x = 3,324.50

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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.