Home / 2,170.94-2,995.86-1,226.78

Finding the Fourth Proportional to 2,170.94, 2,995.86 and 1,226.78

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Solution

The fourth proportional to 2,170.94, 2,995.86 and 1,226.78 is: 1,692.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.94 : 2,995.86 = 1,226.78 : x
  2. Step 2: Convert to fraction form
    2,170.94/2,995.86 = 1,226.78/x
  3. Step 3: Cross multiply
    2,170.94x = 2,995.86 × 1,226.78
  4. Step 4: Simplify right side
    2,170.94x = 3,675,261.13
  5. Step 5: Solve for x
    x = 3,675,261.13/2,170.94
  6. Step 6: Final answer
    x = 1,692.94

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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.