Home / 3,980.33-5,492.45-2,211.74

Finding the Fourth Proportional to 3,980.33, 5,492.45 and 2,211.74

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Solution

The fourth proportional to 3,980.33, 5,492.45 and 2,211.74 is: 3,051.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.33 : 5,492.45 = 2,211.74 : x
  2. Step 2: Convert to fraction form
    3,980.33/5,492.45 = 2,211.74/x
  3. Step 3: Cross multiply
    3,980.33x = 5,492.45 × 2,211.74
  4. Step 4: Simplify right side
    3,980.33x = 12,147,860.30
  5. Step 5: Solve for x
    x = 12,147,860.30/3,980.33
  6. Step 6: Final answer
    x = 3,051.97

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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.