Home / 4,765.28-7,145.42-1,991.44

Finding the Fourth Proportional to 4,765.28, 7,145.42 and 1,991.44

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Solution

The fourth proportional to 4,765.28, 7,145.42 and 1,991.44 is: 2,986.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,765.28 : 7,145.42 = 1,991.44 : x
  2. Step 2: Convert to fraction form
    4,765.28/7,145.42 = 1,991.44/x
  3. Step 3: Cross multiply
    4,765.28x = 7,145.42 × 1,991.44
  4. Step 4: Simplify right side
    4,765.28x = 14,229,675.20
  5. Step 5: Solve for x
    x = 14,229,675.20/4,765.28
  6. Step 6: Final answer
    x = 2,986.12

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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.