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Finding the Fourth Proportional to 1,956.22, 2,933.28 and 859.30

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Solution

The fourth proportional to 1,956.22, 2,933.28 and 859.30 is: 1,288.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,956.22 : 2,933.28 = 859.30 : x
  2. Step 2: Convert to fraction form
    1,956.22/2,933.28 = 859.30/x
  3. Step 3: Cross multiply
    1,956.22x = 2,933.28 × 859.30
  4. Step 4: Simplify right side
    1,956.22x = 2,520,567.50
  5. Step 5: Solve for x
    x = 2,520,567.50/1,956.22
  6. Step 6: Final answer
    x = 1,288.49

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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.