Home / 3,020.20-4,530.30-2,991.40

Finding the Fourth Proportional to 3,020.20, 4,530.30 and 2,991.40

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Solution

The fourth proportional to 3,020.20, 4,530.30 and 2,991.40 is: 4,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.20 : 4,530.30 = 2,991.40 : x
  2. Step 2: Convert to fraction form
    3,020.20/4,530.30 = 2,991.40/x
  3. Step 3: Cross multiply
    3,020.20x = 4,530.30 × 2,991.40
  4. Step 4: Simplify right side
    3,020.20x = 13,551,939.42
  5. Step 5: Solve for x
    x = 13,551,939.42/3,020.20
  6. Step 6: Final answer
    x = 4,487.10

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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.