Home / 5,425.15-8,138.70-2,503.75

Finding the Fourth Proportional to 5,425.15, 8,138.70 and 2,503.75

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Solution

The fourth proportional to 5,425.15, 8,138.70 and 2,503.75 is: 3,756.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.15 : 8,138.70 = 2,503.75 : x
  2. Step 2: Convert to fraction form
    5,425.15/8,138.70 = 2,503.75/x
  3. Step 3: Cross multiply
    5,425.15x = 8,138.70 × 2,503.75
  4. Step 4: Simplify right side
    5,425.15x = 20,377,270.13
  5. Step 5: Solve for x
    x = 20,377,270.13/5,425.15
  6. Step 6: Final answer
    x = 3,756.07

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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.