Home / 3,980.60-5,972.88-3,012.64

Finding the Fourth Proportional to 3,980.60, 5,972.88 and 3,012.64

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Solution

The fourth proportional to 3,980.60, 5,972.88 and 3,012.64 is: 4,520.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.60 : 5,972.88 = 3,012.64 : x
  2. Step 2: Convert to fraction form
    3,980.60/5,972.88 = 3,012.64/x
  3. Step 3: Cross multiply
    3,980.60x = 5,972.88 × 3,012.64
  4. Step 4: Simplify right side
    3,980.60x = 17,994,137.20
  5. Step 5: Solve for x
    x = 17,994,137.20/3,980.60
  6. Step 6: Final answer
    x = 4,520.46

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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.