Home / 4,991.20-7,486.80-3,022.90

Finding the Fourth Proportional to 4,991.20, 7,486.80 and 3,022.90

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Solution

The fourth proportional to 4,991.20, 7,486.80 and 3,022.90 is: 4,534.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.20 : 7,486.80 = 3,022.90 : x
  2. Step 2: Convert to fraction form
    4,991.20/7,486.80 = 3,022.90/x
  3. Step 3: Cross multiply
    4,991.20x = 7,486.80 × 3,022.90
  4. Step 4: Simplify right side
    4,991.20x = 22,631,847.72
  5. Step 5: Solve for x
    x = 22,631,847.72/4,991.20
  6. Step 6: Final answer
    x = 4,534.35

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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.