Home / 4,912.11-7,367.90-1,989.63

Finding the Fourth Proportional to 4,912.11, 7,367.90 and 1,989.63

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Solution

The fourth proportional to 4,912.11, 7,367.90 and 1,989.63 is: 2,984.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.11 : 7,367.90 = 1,989.63 : x
  2. Step 2: Convert to fraction form
    4,912.11/7,367.90 = 1,989.63/x
  3. Step 3: Cross multiply
    4,912.11x = 7,367.90 × 1,989.63
  4. Step 4: Simplify right side
    4,912.11x = 14,659,384.93
  5. Step 5: Solve for x
    x = 14,659,384.93/4,912.11
  6. Step 6: Final answer
    x = 2,984.34

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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.