Home / 3,080.28-4,620.30-1,000.20

Finding the Fourth Proportional to 3,080.28, 4,620.30 and 1,000.20

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Solution

The fourth proportional to 3,080.28, 4,620.30 and 1,000.20 is: 1,500.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.28 : 4,620.30 = 1,000.20 : x
  2. Step 2: Convert to fraction form
    3,080.28/4,620.30 = 1,000.20/x
  3. Step 3: Cross multiply
    3,080.28x = 4,620.30 × 1,000.20
  4. Step 4: Simplify right side
    3,080.28x = 4,621,224.06
  5. Step 5: Solve for x
    x = 4,621,224.06/3,080.28
  6. Step 6: Final answer
    x = 1,500.26

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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.