Home / 3,984.60-5,977.98-1,211.16

Finding the Fourth Proportional to 3,984.60, 5,977.98 and 1,211.16

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Solution

The fourth proportional to 3,984.60, 5,977.98 and 1,211.16 is: 1,817.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.60 : 5,977.98 = 1,211.16 : x
  2. Step 2: Convert to fraction form
    3,984.60/5,977.98 = 1,211.16/x
  3. Step 3: Cross multiply
    3,984.60x = 5,977.98 × 1,211.16
  4. Step 4: Simplify right side
    3,984.60x = 7,240,290.26
  5. Step 5: Solve for x
    x = 7,240,290.26/3,984.60
  6. Step 6: Final answer
    x = 1,817.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.