Home / 3,980.49-5,492.19-2,408.28

Finding the Fourth Proportional to 3,980.49, 5,492.19 and 2,408.28

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Solution

The fourth proportional to 3,980.49, 5,492.19 and 2,408.28 is: 3,322.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.49 : 5,492.19 = 2,408.28 : x
  2. Step 2: Convert to fraction form
    3,980.49/5,492.19 = 2,408.28/x
  3. Step 3: Cross multiply
    3,980.49x = 5,492.19 × 2,408.28
  4. Step 4: Simplify right side
    3,980.49x = 13,226,731.33
  5. Step 5: Solve for x
    x = 13,226,731.33/3,980.49
  6. Step 6: Final answer
    x = 3,322.89

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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.