Home / 2,146.78-3,211.27-2,015.56

Finding the Fourth Proportional to 2,146.78, 3,211.27 and 2,015.56

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Solution

The fourth proportional to 2,146.78, 3,211.27 and 2,015.56 is: 3,014.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.78 : 3,211.27 = 2,015.56 : x
  2. Step 2: Convert to fraction form
    2,146.78/3,211.27 = 2,015.56/x
  3. Step 3: Cross multiply
    2,146.78x = 3,211.27 × 2,015.56
  4. Step 4: Simplify right side
    2,146.78x = 6,472,507.36
  5. Step 5: Solve for x
    x = 6,472,507.36/2,146.78
  6. Step 6: Final answer
    x = 3,014.98

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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.