Home / 2,208.20-3,045.30-1,509.80

Finding the Fourth Proportional to 2,208.20, 3,045.30 and 1,509.80

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Solution

The fourth proportional to 2,208.20, 3,045.30 and 1,509.80 is: 2,082.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.20 : 3,045.30 = 1,509.80 : x
  2. Step 2: Convert to fraction form
    2,208.20/3,045.30 = 1,509.80/x
  3. Step 3: Cross multiply
    2,208.20x = 3,045.30 × 1,509.80
  4. Step 4: Simplify right side
    2,208.20x = 4,597,793.94
  5. Step 5: Solve for x
    x = 4,597,793.94/2,208.20
  6. Step 6: Final answer
    x = 2,082.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.