Home / 7,138.20-10,701.81-3,625.32

Finding the Fourth Proportional to 7,138.20, 10,701.81 and 3,625.32

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Solution

The fourth proportional to 7,138.20, 10,701.81 and 3,625.32 is: 5,435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.20 : 10,701.81 = 3,625.32 : x
  2. Step 2: Convert to fraction form
    7,138.20/10,701.81 = 3,625.32/x
  3. Step 3: Cross multiply
    7,138.20x = 10,701.81 × 3,625.32
  4. Step 4: Simplify right side
    7,138.20x = 38,797,485.83
  5. Step 5: Solve for x
    x = 38,797,485.83/7,138.20
  6. Step 6: Final answer
    x = 5,435.19

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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.