Home / 2,181.92-3,011.44-1,395.94

Finding the Fourth Proportional to 2,181.92, 3,011.44 and 1,395.94

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Solution

The fourth proportional to 2,181.92, 3,011.44 and 1,395.94 is: 1,926.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.92 : 3,011.44 = 1,395.94 : x
  2. Step 2: Convert to fraction form
    2,181.92/3,011.44 = 1,395.94/x
  3. Step 3: Cross multiply
    2,181.92x = 3,011.44 × 1,395.94
  4. Step 4: Simplify right side
    2,181.92x = 4,203,789.55
  5. Step 5: Solve for x
    x = 4,203,789.55/2,181.92
  6. Step 6: Final answer
    x = 1,926.65

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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.