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Finding the Fourth Proportional to 8,269.64, 12,400.20 and 2,425.49

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Solution

The fourth proportional to 8,269.64, 12,400.20 and 2,425.49 is: 3,636.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,269.64 : 12,400.20 = 2,425.49 : x
  2. Step 2: Convert to fraction form
    8,269.64/12,400.20 = 2,425.49/x
  3. Step 3: Cross multiply
    8,269.64x = 12,400.20 × 2,425.49
  4. Step 4: Simplify right side
    8,269.64x = 30,076,561.10
  5. Step 5: Solve for x
    x = 30,076,561.10/8,269.64
  6. Step 6: Final answer
    x = 3,636.99

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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.