Home / 5,112.01-7,664.12-1,994.20

Finding the Fourth Proportional to 5,112.01, 7,664.12 and 1,994.20

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Solution

The fourth proportional to 5,112.01, 7,664.12 and 1,994.20 is: 2,989.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.01 : 7,664.12 = 1,994.20 : x
  2. Step 2: Convert to fraction form
    5,112.01/7,664.12 = 1,994.20/x
  3. Step 3: Cross multiply
    5,112.01x = 7,664.12 × 1,994.20
  4. Step 4: Simplify right side
    5,112.01x = 15,283,789.78
  5. Step 5: Solve for x
    x = 15,283,789.78/5,112.01
  6. Step 6: Final answer
    x = 2,989.78

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1.5x scale

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.