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Finding the Fourth Proportional to 1,889.81, 2,832.69 and 914.57

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Solution

The fourth proportional to 1,889.81, 2,832.69 and 914.57 is: 1,370.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.81 : 2,832.69 = 914.57 : x
  2. Step 2: Convert to fraction form
    1,889.81/2,832.69 = 914.57/x
  3. Step 3: Cross multiply
    1,889.81x = 2,832.69 × 914.57
  4. Step 4: Simplify right side
    1,889.81x = 2,590,693.29
  5. Step 5: Solve for x
    x = 2,590,693.29/1,889.81
  6. Step 6: Final answer
    x = 1,370.88

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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.