Home / 2,115.66-3,164.85-1,770.06

Finding the Fourth Proportional to 2,115.66, 3,164.85 and 1,770.06

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Solution

The fourth proportional to 2,115.66, 3,164.85 and 1,770.06 is: 2,647.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.66 : 3,164.85 = 1,770.06 : x
  2. Step 2: Convert to fraction form
    2,115.66/3,164.85 = 1,770.06/x
  3. Step 3: Cross multiply
    2,115.66x = 3,164.85 × 1,770.06
  4. Step 4: Simplify right side
    2,115.66x = 5,601,974.39
  5. Step 5: Solve for x
    x = 5,601,974.39/2,115.66
  6. Step 6: Final answer
    x = 2,647.86

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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.