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Finding the Fourth Proportional to 1,956.30, 2,917.97 and 1,820.22

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Solution

The fourth proportional to 1,956.30, 2,917.97 and 1,820.22 is: 2,714.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,956.30 : 2,917.97 = 1,820.22 : x
  2. Step 2: Convert to fraction form
    1,956.30/2,917.97 = 1,820.22/x
  3. Step 3: Cross multiply
    1,956.30x = 2,917.97 × 1,820.22
  4. Step 4: Simplify right side
    1,956.30x = 5,311,338.25
  5. Step 5: Solve for x
    x = 5,311,338.25/1,956.30
  6. Step 6: Final answer
    x = 2,714.99

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.