Home / 8,324.15-11,491.55-6,431.49

Finding the Fourth Proportional to 8,324.15, 11,491.55 and 6,431.49

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Solution

The fourth proportional to 8,324.15, 11,491.55 and 6,431.49 is: 8,878.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,324.15 : 11,491.55 = 6,431.49 : x
  2. Step 2: Convert to fraction form
    8,324.15/11,491.55 = 6,431.49/x
  3. Step 3: Cross multiply
    8,324.15x = 11,491.55 × 6,431.49
  4. Step 4: Simplify right side
    8,324.15x = 73,907,756.75
  5. Step 5: Solve for x
    x = 73,907,756.75/8,324.15
  6. Step 6: Final answer
    x = 8,878.72

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.