Home / 3,980.65-5,491.21-2,704.07

Finding the Fourth Proportional to 3,980.65, 5,491.21 and 2,704.07

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Solution

The fourth proportional to 3,980.65, 5,491.21 and 2,704.07 is: 3,730.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.65 : 5,491.21 = 2,704.07 : x
  2. Step 2: Convert to fraction form
    3,980.65/5,491.21 = 2,704.07/x
  3. Step 3: Cross multiply
    3,980.65x = 5,491.21 × 2,704.07
  4. Step 4: Simplify right side
    3,980.65x = 14,848,616.22
  5. Step 5: Solve for x
    x = 14,848,616.22/3,980.65
  6. Step 6: Final answer
    x = 3,730.20

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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.