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Finding the Fourth Proportional to 1,892.36, 2,838.56 and 722.88

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Solution

The fourth proportional to 1,892.36, 2,838.56 and 722.88 is: 1,084.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.36 : 2,838.56 = 722.88 : x
  2. Step 2: Convert to fraction form
    1,892.36/2,838.56 = 722.88/x
  3. Step 3: Cross multiply
    1,892.36x = 2,838.56 × 722.88
  4. Step 4: Simplify right side
    1,892.36x = 2,051,938.25
  5. Step 5: Solve for x
    x = 2,051,938.25/1,892.36
  6. Step 6: Final answer
    x = 1,084.33

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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.