Home / 3,980.03-5,492.85-2,212.21

Finding the Fourth Proportional to 3,980.03, 5,492.85 and 2,212.21

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Solution

The fourth proportional to 3,980.03, 5,492.85 and 2,212.21 is: 3,053.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.03 : 5,492.85 = 2,212.21 : x
  2. Step 2: Convert to fraction form
    3,980.03/5,492.85 = 2,212.21/x
  3. Step 3: Cross multiply
    3,980.03x = 5,492.85 × 2,212.21
  4. Step 4: Simplify right side
    3,980.03x = 12,151,310.23
  5. Step 5: Solve for x
    x = 12,151,310.23/3,980.03
  6. Step 6: Final answer
    x = 3,053.07

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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.