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Finding the Fourth Proportional to 2,999.39, 4,140.59 and 1,880.91

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Solution

The fourth proportional to 2,999.39, 4,140.59 and 1,880.91 is: 2,596.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.39 : 4,140.59 = 1,880.91 : x
  2. Step 2: Convert to fraction form
    2,999.39/4,140.59 = 1,880.91/x
  3. Step 3: Cross multiply
    2,999.39x = 4,140.59 × 1,880.91
  4. Step 4: Simplify right side
    2,999.39x = 7,788,067.73
  5. Step 5: Solve for x
    x = 7,788,067.73/2,999.39
  6. Step 6: Final answer
    x = 2,596.55

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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.