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Finding the Fourth Proportional to 1,889.43, 2,828.16 and 1,065.26

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Solution

The fourth proportional to 1,889.43, 2,828.16 and 1,065.26 is: 1,594.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.43 : 2,828.16 = 1,065.26 : x
  2. Step 2: Convert to fraction form
    1,889.43/2,828.16 = 1,065.26/x
  3. Step 3: Cross multiply
    1,889.43x = 2,828.16 × 1,065.26
  4. Step 4: Simplify right side
    1,889.43x = 3,012,711.58
  5. Step 5: Solve for x
    x = 3,012,711.58/1,889.43
  6. Step 6: Final answer
    x = 1,594.51

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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.