Home / 6,118.47-9,178.74-2,115.68

Finding the Fourth Proportional to 6,118.47, 9,178.74 and 2,115.68

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Solution

The fourth proportional to 6,118.47, 9,178.74 and 2,115.68 is: 3,173.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,118.47 : 9,178.74 = 2,115.68 : x
  2. Step 2: Convert to fraction form
    6,118.47/9,178.74 = 2,115.68/x
  3. Step 3: Cross multiply
    6,118.47x = 9,178.74 × 2,115.68
  4. Step 4: Simplify right side
    6,118.47x = 19,419,230.75
  5. Step 5: Solve for x
    x = 19,419,230.75/6,118.47
  6. Step 6: Final answer
    x = 3,173.87

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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.