Home / 5,119.85-7,063.97-2,881.59

Finding the Fourth Proportional to 5,119.85, 7,063.97 and 2,881.59

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Solution

The fourth proportional to 5,119.85, 7,063.97 and 2,881.59 is: 3,975.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.85 : 7,063.97 = 2,881.59 : x
  2. Step 2: Convert to fraction form
    5,119.85/7,063.97 = 2,881.59/x
  3. Step 3: Cross multiply
    5,119.85x = 7,063.97 × 2,881.59
  4. Step 4: Simplify right side
    5,119.85x = 20,355,465.31
  5. Step 5: Solve for x
    x = 20,355,465.31/5,119.85
  6. Step 6: Final answer
    x = 3,975.80

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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.