Home / 7,982.20-11,015.22-4,445.20

Finding the Fourth Proportional to 7,982.20, 11,015.22 and 4,445.20

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Solution

The fourth proportional to 7,982.20, 11,015.22 and 4,445.20 is: 6,134.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.20 : 11,015.22 = 4,445.20 : x
  2. Step 2: Convert to fraction form
    7,982.20/11,015.22 = 4,445.20/x
  3. Step 3: Cross multiply
    7,982.20x = 11,015.22 × 4,445.20
  4. Step 4: Simplify right side
    7,982.20x = 48,964,855.94
  5. Step 5: Solve for x
    x = 48,964,855.94/7,982.20
  6. Step 6: Final answer
    x = 6,134.26

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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.