Home / 2,126.53-3,181.78-1,910.71

Finding the Fourth Proportional to 2,126.53, 3,181.78 and 1,910.71

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Solution

The fourth proportional to 2,126.53, 3,181.78 and 1,910.71 is: 2,858.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.53 : 3,181.78 = 1,910.71 : x
  2. Step 2: Convert to fraction form
    2,126.53/3,181.78 = 1,910.71/x
  3. Step 3: Cross multiply
    2,126.53x = 3,181.78 × 1,910.71
  4. Step 4: Simplify right side
    2,126.53x = 6,079,465.23
  5. Step 5: Solve for x
    x = 6,079,465.23/2,126.53
  6. Step 6: Final answer
    x = 2,858.86

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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.