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Finding the Fourth Proportional to 1,894.88, 2,615.04 and 1,305.68

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Solution

The fourth proportional to 1,894.88, 2,615.04 and 1,305.68 is: 1,801.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894.88 : 2,615.04 = 1,305.68 : x
  2. Step 2: Convert to fraction form
    1,894.88/2,615.04 = 1,305.68/x
  3. Step 3: Cross multiply
    1,894.88x = 2,615.04 × 1,305.68
  4. Step 4: Simplify right side
    1,894.88x = 3,414,405.43
  5. Step 5: Solve for x
    x = 3,414,405.43/1,894.88
  6. Step 6: Final answer
    x = 1,801.91

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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.