Home / 2,115.67-3,173.34-1,126.96

Finding the Fourth Proportional to 2,115.67, 3,173.34 and 1,126.96

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Solution

The fourth proportional to 2,115.67, 3,173.34 and 1,126.96 is: 1,690.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.67 : 3,173.34 = 1,126.96 : x
  2. Step 2: Convert to fraction form
    2,115.67/3,173.34 = 1,126.96/x
  3. Step 3: Cross multiply
    2,115.67x = 3,173.34 × 1,126.96
  4. Step 4: Simplify right side
    2,115.67x = 3,576,211.38
  5. Step 5: Solve for x
    x = 3,576,211.38/2,115.67
  6. Step 6: Final answer
    x = 1,690.35

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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.