Home / 2,135.75-2,944.49-1,917.05

Finding the Fourth Proportional to 2,135.75, 2,944.49 and 1,917.05

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Solution

The fourth proportional to 2,135.75, 2,944.49 and 1,917.05 is: 2,642.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.75 : 2,944.49 = 1,917.05 : x
  2. Step 2: Convert to fraction form
    2,135.75/2,944.49 = 1,917.05/x
  3. Step 3: Cross multiply
    2,135.75x = 2,944.49 × 1,917.05
  4. Step 4: Simplify right side
    2,135.75x = 5,644,710.25
  5. Step 5: Solve for x
    x = 5,644,710.25/2,135.75
  6. Step 6: Final answer
    x = 2,642.97

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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.