Home / 3,080.20-4,623.20-1,620.40

Finding the Fourth Proportional to 3,080.20, 4,623.20 and 1,620.40

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Solution

The fourth proportional to 3,080.20, 4,623.20 and 1,620.40 is: 2,432.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.20 : 4,623.20 = 1,620.40 : x
  2. Step 2: Convert to fraction form
    3,080.20/4,623.20 = 1,620.40/x
  3. Step 3: Cross multiply
    3,080.20x = 4,623.20 × 1,620.40
  4. Step 4: Simplify right side
    3,080.20x = 7,491,433.28
  5. Step 5: Solve for x
    x = 7,491,433.28/3,080.20
  6. Step 6: Final answer
    x = 2,432.13

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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.