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Finding the Fourth Proportional to 3,469.80, 4,788.29 and 1,897.88

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Solution

The fourth proportional to 3,469.80, 4,788.29 and 1,897.88 is: 2,619.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.80 : 4,788.29 = 1,897.88 : x
  2. Step 2: Convert to fraction form
    3,469.80/4,788.29 = 1,897.88/x
  3. Step 3: Cross multiply
    3,469.80x = 4,788.29 × 1,897.88
  4. Step 4: Simplify right side
    3,469.80x = 9,087,566.39
  5. Step 5: Solve for x
    x = 9,087,566.39/3,469.80
  6. Step 6: Final answer
    x = 2,619.05

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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.