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Finding the Fourth Proportional to 3,690.80, 5,541.40 and 2,958.08

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Solution

The fourth proportional to 3,690.80, 5,541.40 and 2,958.08 is: 4,441.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.80 : 5,541.40 = 2,958.08 : x
  2. Step 2: Convert to fraction form
    3,690.80/5,541.40 = 2,958.08/x
  3. Step 3: Cross multiply
    3,690.80x = 5,541.40 × 2,958.08
  4. Step 4: Simplify right side
    3,690.80x = 16,391,904.51
  5. Step 5: Solve for x
    x = 16,391,904.51/3,690.80
  6. Step 6: Final answer
    x = 4,441.29

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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.