Home / 8,812.32-12,171.66-6,418.44

Finding the Fourth Proportional to 8,812.32, 12,171.66 and 6,418.44

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Solution

The fourth proportional to 8,812.32, 12,171.66 and 6,418.44 is: 8,865.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.32 : 12,171.66 = 6,418.44 : x
  2. Step 2: Convert to fraction form
    8,812.32/12,171.66 = 6,418.44/x
  3. Step 3: Cross multiply
    8,812.32x = 12,171.66 × 6,418.44
  4. Step 4: Simplify right side
    8,812.32x = 78,123,069.41
  5. Step 5: Solve for x
    x = 78,123,069.41/8,812.32
  6. Step 6: Final answer
    x = 8,865.21

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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.