Home / 3,186.45-4,396.23-1,927.90

Finding the Fourth Proportional to 3,186.45, 4,396.23 and 1,927.90

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Solution

The fourth proportional to 3,186.45, 4,396.23 and 1,927.90 is: 2,659.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.45 : 4,396.23 = 1,927.90 : x
  2. Step 2: Convert to fraction form
    3,186.45/4,396.23 = 1,927.90/x
  3. Step 3: Cross multiply
    3,186.45x = 4,396.23 × 1,927.90
  4. Step 4: Simplify right side
    3,186.45x = 8,475,491.82
  5. Step 5: Solve for x
    x = 8,475,491.82/3,186.45
  6. Step 6: Final answer
    x = 2,659.85

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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.