Home / 5,119.80-7,064.39-2,880.86

Finding the Fourth Proportional to 5,119.80, 7,064.39 and 2,880.86

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Solution

The fourth proportional to 5,119.80, 7,064.39 and 2,880.86 is: 3,975.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.80 : 7,064.39 = 2,880.86 : x
  2. Step 2: Convert to fraction form
    5,119.80/7,064.39 = 2,880.86/x
  3. Step 3: Cross multiply
    5,119.80x = 7,064.39 × 2,880.86
  4. Step 4: Simplify right side
    5,119.80x = 20,351,468.85
  5. Step 5: Solve for x
    x = 20,351,468.85/5,119.80
  6. Step 6: Final answer
    x = 3,975.05

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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.