Home / 2,086.95-2,878.97-1,331.09

Finding the Fourth Proportional to 2,086.95, 2,878.97 and 1,331.09

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Solution

The fourth proportional to 2,086.95, 2,878.97 and 1,331.09 is: 1,836.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086.95 : 2,878.97 = 1,331.09 : x
  2. Step 2: Convert to fraction form
    2,086.95/2,878.97 = 1,331.09/x
  3. Step 3: Cross multiply
    2,086.95x = 2,878.97 × 1,331.09
  4. Step 4: Simplify right side
    2,086.95x = 3,832,168.18
  5. Step 5: Solve for x
    x = 3,832,168.18/2,086.95
  6. Step 6: Final answer
    x = 1,836.25

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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.