Home / 3,980.00-5,492.63-2,211.66

Finding the Fourth Proportional to 3,980.00, 5,492.63 and 2,211.66

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Solution

The fourth proportional to 3,980.00, 5,492.63 and 2,211.66 is: 3,052.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.00 : 5,492.63 = 2,211.66 : x
  2. Step 2: Convert to fraction form
    3,980.00/5,492.63 = 2,211.66/x
  3. Step 3: Cross multiply
    3,980.00x = 5,492.63 × 2,211.66
  4. Step 4: Simplify right side
    3,980.00x = 12,147,835.59
  5. Step 5: Solve for x
    x = 12,147,835.59/3,980.00
  6. Step 6: Final answer
    x = 3,052.22

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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.