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Finding the Fourth Proportional to 1,971.01, 2,956.28 and 799.83

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Solution

The fourth proportional to 1,971.01, 2,956.28 and 799.83 is: 1,199.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.01 : 2,956.28 = 799.83 : x
  2. Step 2: Convert to fraction form
    1,971.01/2,956.28 = 799.83/x
  3. Step 3: Cross multiply
    1,971.01x = 2,956.28 × 799.83
  4. Step 4: Simplify right side
    1,971.01x = 2,364,521.43
  5. Step 5: Solve for x
    x = 2,364,521.43/1,971.01
  6. Step 6: Final answer
    x = 1,199.65

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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.