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Finding the Fourth Proportional to 2,106.92, 3,161.18 and 951.88

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Solution

The fourth proportional to 2,106.92, 3,161.18 and 951.88 is: 1,428.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.92 : 3,161.18 = 951.88 : x
  2. Step 2: Convert to fraction form
    2,106.92/3,161.18 = 951.88/x
  3. Step 3: Cross multiply
    2,106.92x = 3,161.18 × 951.88
  4. Step 4: Simplify right side
    2,106.92x = 3,009,064.02
  5. Step 5: Solve for x
    x = 3,009,064.02/2,106.92
  6. Step 6: Final answer
    x = 1,428.18

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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.