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Finding the Fourth Proportional to 1,892.76, 2,838.32 and 1,396.16

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Solution

The fourth proportional to 1,892.76, 2,838.32 and 1,396.16 is: 2,093.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.76 : 2,838.32 = 1,396.16 : x
  2. Step 2: Convert to fraction form
    1,892.76/2,838.32 = 1,396.16/x
  3. Step 3: Cross multiply
    1,892.76x = 2,838.32 × 1,396.16
  4. Step 4: Simplify right side
    1,892.76x = 3,962,748.85
  5. Step 5: Solve for x
    x = 3,962,748.85/1,892.76
  6. Step 6: Final answer
    x = 2,093.64

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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.