Home / 2,961.40-4,084.14-2,371.72

Finding the Fourth Proportional to 2,961.40, 4,084.14 and 2,371.72

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Solution

The fourth proportional to 2,961.40, 4,084.14 and 2,371.72 is: 3,270.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.40 : 4,084.14 = 2,371.72 : x
  2. Step 2: Convert to fraction form
    2,961.40/4,084.14 = 2,371.72/x
  3. Step 3: Cross multiply
    2,961.40x = 4,084.14 × 2,371.72
  4. Step 4: Simplify right side
    2,961.40x = 9,686,436.52
  5. Step 5: Solve for x
    x = 9,686,436.52/2,961.40
  6. Step 6: Final answer
    x = 3,270.90

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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.