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Finding the Fourth Proportional to 5,425.41, 8,138.11 and 5,148.39

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Solution

The fourth proportional to 5,425.41, 8,138.11 and 5,148.39 is: 7,722.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.41 : 8,138.11 = 5,148.39 : x
  2. Step 2: Convert to fraction form
    5,425.41/8,138.11 = 5,148.39/x
  3. Step 3: Cross multiply
    5,425.41x = 8,138.11 × 5,148.39
  4. Step 4: Simplify right side
    5,425.41x = 41,898,164.14
  5. Step 5: Solve for x
    x = 41,898,164.14/5,425.41
  6. Step 6: Final answer
    x = 7,722.58

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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.