Home / 6,109.63-8,423.90-5,163.75

Finding the Fourth Proportional to 6,109.63, 8,423.90 and 5,163.75

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Solution

The fourth proportional to 6,109.63, 8,423.90 and 5,163.75 is: 7,119.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,109.63 : 8,423.90 = 5,163.75 : x
  2. Step 2: Convert to fraction form
    6,109.63/8,423.90 = 5,163.75/x
  3. Step 3: Cross multiply
    6,109.63x = 8,423.90 × 5,163.75
  4. Step 4: Simplify right side
    6,109.63x = 43,498,907.17
  5. Step 5: Solve for x
    x = 43,498,907.17/6,109.63
  6. Step 6: Final answer
    x = 7,119.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.