Home / 3,690.10-5,081.97-3,609.46

Finding the Fourth Proportional to 3,690.10, 5,081.97 and 3,609.46

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Solution

The fourth proportional to 3,690.10, 5,081.97 and 3,609.46 is: 4,970.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.10 : 5,081.97 = 3,609.46 : x
  2. Step 2: Convert to fraction form
    3,690.10/5,081.97 = 3,609.46/x
  3. Step 3: Cross multiply
    3,690.10x = 5,081.97 × 3,609.46
  4. Step 4: Simplify right side
    3,690.10x = 18,343,167.44
  5. Step 5: Solve for x
    x = 18,343,167.44/3,690.10
  6. Step 6: Final answer
    x = 4,970.91

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1.5x scale

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.