Home / 5,191.70-7,785.99-2,725.18

Finding the Fourth Proportional to 5,191.70, 7,785.99 and 2,725.18

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Solution

The fourth proportional to 5,191.70, 7,785.99 and 2,725.18 is: 4,086.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.70 : 7,785.99 = 2,725.18 : x
  2. Step 2: Convert to fraction form
    5,191.70/7,785.99 = 2,725.18/x
  3. Step 3: Cross multiply
    5,191.70x = 7,785.99 × 2,725.18
  4. Step 4: Simplify right side
    5,191.70x = 21,218,204.76
  5. Step 5: Solve for x
    x = 21,218,204.76/5,191.70
  6. Step 6: Final answer
    x = 4,086.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.