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Finding the Fourth Proportional to 1,894.76, 2,839.26 and 1,124.84

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Solution

The fourth proportional to 1,894.76, 2,839.26 and 1,124.84 is: 1,685.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894.76 : 2,839.26 = 1,124.84 : x
  2. Step 2: Convert to fraction form
    1,894.76/2,839.26 = 1,124.84/x
  3. Step 3: Cross multiply
    1,894.76x = 2,839.26 × 1,124.84
  4. Step 4: Simplify right side
    1,894.76x = 3,193,713.22
  5. Step 5: Solve for x
    x = 3,193,713.22/1,894.76
  6. Step 6: Final answer
    x = 1,685.55

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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.