Home / 5,169.84-7,134.30-2,811.92

Finding the Fourth Proportional to 5,169.84, 7,134.30 and 2,811.92

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Solution

The fourth proportional to 5,169.84, 7,134.30 and 2,811.92 is: 3,880.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.84 : 7,134.30 = 2,811.92 : x
  2. Step 2: Convert to fraction form
    5,169.84/7,134.30 = 2,811.92/x
  3. Step 3: Cross multiply
    5,169.84x = 7,134.30 × 2,811.92
  4. Step 4: Simplify right side
    5,169.84x = 20,061,080.86
  5. Step 5: Solve for x
    x = 20,061,080.86/5,169.84
  6. Step 6: Final answer
    x = 3,880.41

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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.