Home / 2,005.20-3,008.70-964.80

Finding the Fourth Proportional to 2,005.20, 3,008.70 and 964.80

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Solution

The fourth proportional to 2,005.20, 3,008.70 and 964.80 is: 1,447.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.20 : 3,008.70 = 964.80 : x
  2. Step 2: Convert to fraction form
    2,005.20/3,008.70 = 964.80/x
  3. Step 3: Cross multiply
    2,005.20x = 3,008.70 × 964.80
  4. Step 4: Simplify right side
    2,005.20x = 2,902,793.76
  5. Step 5: Solve for x
    x = 2,902,793.76/2,005.20
  6. Step 6: Final answer
    x = 1,447.63

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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.