Home / 2,146.10-3,213.39-1,279.22

Finding the Fourth Proportional to 2,146.10, 3,213.39 and 1,279.22

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Solution

The fourth proportional to 2,146.10, 3,213.39 and 1,279.22 is: 1,915.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.10 : 3,213.39 = 1,279.22 : x
  2. Step 2: Convert to fraction form
    2,146.10/3,213.39 = 1,279.22/x
  3. Step 3: Cross multiply
    2,146.10x = 3,213.39 × 1,279.22
  4. Step 4: Simplify right side
    2,146.10x = 4,110,632.76
  5. Step 5: Solve for x
    x = 4,110,632.76/2,146.10
  6. Step 6: Final answer
    x = 1,915.40

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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.