Home / 5,119.11-7,064.20-2,880.85

Finding the Fourth Proportional to 5,119.11, 7,064.20 and 2,880.85

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Solution

The fourth proportional to 5,119.11, 7,064.20 and 2,880.85 is: 3,975.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.11 : 7,064.20 = 2,880.85 : x
  2. Step 2: Convert to fraction form
    5,119.11/7,064.20 = 2,880.85/x
  3. Step 3: Cross multiply
    5,119.11x = 7,064.20 × 2,880.85
  4. Step 4: Simplify right side
    5,119.11x = 20,350,900.57
  5. Step 5: Solve for x
    x = 20,350,900.57/5,119.11
  6. Step 6: Final answer
    x = 3,975.48

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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.