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Finding the Fourth Proportional to 1,504.88, 2,076.79 and 841.85

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Solution

The fourth proportional to 1,504.88, 2,076.79 and 841.85 is: 1,161.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,504.88 : 2,076.79 = 841.85 : x
  2. Step 2: Convert to fraction form
    1,504.88/2,076.79 = 841.85/x
  3. Step 3: Cross multiply
    1,504.88x = 2,076.79 × 841.85
  4. Step 4: Simplify right side
    1,504.88x = 1,748,348.75
  5. Step 5: Solve for x
    x = 1,748,348.75/1,504.88
  6. Step 6: Final answer
    x = 1,161.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.