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Finding the Fourth Proportional to 8,425.91, 12,630.56 and 3,494.22

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Solution

The fourth proportional to 8,425.91, 12,630.56 and 3,494.22 is: 5,237.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,425.91 : 12,630.56 = 3,494.22 : x
  2. Step 2: Convert to fraction form
    8,425.91/12,630.56 = 3,494.22/x
  3. Step 3: Cross multiply
    8,425.91x = 12,630.56 × 3,494.22
  4. Step 4: Simplify right side
    8,425.91x = 44,133,937.89
  5. Step 5: Solve for x
    x = 44,133,937.89/8,425.91
  6. Step 6: Final answer
    x = 5,237.89

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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.