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Finding the Fourth Proportional to 1,805.04, 2,706.48 and 881.28

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Solution

The fourth proportional to 1,805.04, 2,706.48 and 881.28 is: 1,321.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805.04 : 2,706.48 = 881.28 : x
  2. Step 2: Convert to fraction form
    1,805.04/2,706.48 = 881.28/x
  3. Step 3: Cross multiply
    1,805.04x = 2,706.48 × 881.28
  4. Step 4: Simplify right side
    1,805.04x = 2,385,166.69
  5. Step 5: Solve for x
    x = 2,385,166.69/1,805.04
  6. Step 6: Final answer
    x = 1,321.39

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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.