Home / 3,980.65-5,493.28-2,408.29

Finding the Fourth Proportional to 3,980.65, 5,493.28 and 2,408.29

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Solution

The fourth proportional to 3,980.65, 5,493.28 and 2,408.29 is: 3,323.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.65 : 5,493.28 = 2,408.29 : x
  2. Step 2: Convert to fraction form
    3,980.65/5,493.28 = 2,408.29/x
  3. Step 3: Cross multiply
    3,980.65x = 5,493.28 × 2,408.29
  4. Step 4: Simplify right side
    3,980.65x = 13,229,411.29
  5. Step 5: Solve for x
    x = 13,229,411.29/3,980.65
  6. Step 6: Final answer
    x = 3,323.43

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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.