Home / 6,078.87-9,119.70-3,156.57

Finding the Fourth Proportional to 6,078.87, 9,119.70 and 3,156.57

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Solution

The fourth proportional to 6,078.87, 9,119.70 and 3,156.57 is: 4,735.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,078.87 : 9,119.70 = 3,156.57 : x
  2. Step 2: Convert to fraction form
    6,078.87/9,119.70 = 3,156.57/x
  3. Step 3: Cross multiply
    6,078.87x = 9,119.70 × 3,156.57
  4. Step 4: Simplify right side
    6,078.87x = 28,786,971.43
  5. Step 5: Solve for x
    x = 28,786,971.43/6,078.87
  6. Step 6: Final answer
    x = 4,735.58

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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.