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Finding the Fourth Proportional to 8,229.80, 12,345.90 and 2,683.40

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Solution

The fourth proportional to 8,229.80, 12,345.90 and 2,683.40 is: 4,025.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,229.80 : 12,345.90 = 2,683.40 : x
  2. Step 2: Convert to fraction form
    8,229.80/12,345.90 = 2,683.40/x
  3. Step 3: Cross multiply
    8,229.80x = 12,345.90 × 2,683.40
  4. Step 4: Simplify right side
    8,229.80x = 33,128,988.06
  5. Step 5: Solve for x
    x = 33,128,988.06/8,229.80
  6. Step 6: Final answer
    x = 4,025.49

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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.