Home / 5,119.86-7,065.42-2,881.77

Finding the Fourth Proportional to 5,119.86, 7,065.42 and 2,881.77

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Solution

The fourth proportional to 5,119.86, 7,065.42 and 2,881.77 is: 3,976.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.86 : 7,065.42 = 2,881.77 : x
  2. Step 2: Convert to fraction form
    5,119.86/7,065.42 = 2,881.77/x
  3. Step 3: Cross multiply
    5,119.86x = 7,065.42 × 2,881.77
  4. Step 4: Simplify right side
    5,119.86x = 20,360,922.60
  5. Step 5: Solve for x
    x = 20,360,922.60/5,119.86
  6. Step 6: Final answer
    x = 3,976.85

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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.