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Finding the Fourth Proportional to 3,544.85, 4,891.05 and 2,979.83

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Solution

The fourth proportional to 3,544.85, 4,891.05 and 2,979.83 is: 4,111.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,544.85 : 4,891.05 = 2,979.83 : x
  2. Step 2: Convert to fraction form
    3,544.85/4,891.05 = 2,979.83/x
  3. Step 3: Cross multiply
    3,544.85x = 4,891.05 × 2,979.83
  4. Step 4: Simplify right side
    3,544.85x = 14,574,473.07
  5. Step 5: Solve for x
    x = 14,574,473.07/3,544.85
  6. Step 6: Final answer
    x = 4,111.46

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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.