Home / 5,687.12-7,847.69-4,195.87

Finding the Fourth Proportional to 5,687.12, 7,847.69 and 4,195.87

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Solution

The fourth proportional to 5,687.12, 7,847.69 and 4,195.87 is: 5,789.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.12 : 7,847.69 = 4,195.87 : x
  2. Step 2: Convert to fraction form
    5,687.12/7,847.69 = 4,195.87/x
  3. Step 3: Cross multiply
    5,687.12x = 7,847.69 × 4,195.87
  4. Step 4: Simplify right side
    5,687.12x = 32,927,846.44
  5. Step 5: Solve for x
    x = 32,927,846.44/5,687.12
  6. Step 6: Final answer
    x = 5,789.90

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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.