Home / 3,980.22-5,491.13-2,301.32

Finding the Fourth Proportional to 3,980.22, 5,491.13 and 2,301.32

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Solution

The fourth proportional to 3,980.22, 5,491.13 and 2,301.32 is: 3,174.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.22 : 5,491.13 = 2,301.32 : x
  2. Step 2: Convert to fraction form
    3,980.22/5,491.13 = 2,301.32/x
  3. Step 3: Cross multiply
    3,980.22x = 5,491.13 × 2,301.32
  4. Step 4: Simplify right side
    3,980.22x = 12,636,808.33
  5. Step 5: Solve for x
    x = 12,636,808.33/3,980.22
  6. Step 6: Final answer
    x = 3,174.90

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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.