Home / 2,820.80-4,231.20-1,522.88

Finding the Fourth Proportional to 2,820.80, 4,231.20 and 1,522.88

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Solution

The fourth proportional to 2,820.80, 4,231.20 and 1,522.88 is: 2,284.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.80 : 4,231.20 = 1,522.88 : x
  2. Step 2: Convert to fraction form
    2,820.80/4,231.20 = 1,522.88/x
  3. Step 3: Cross multiply
    2,820.80x = 4,231.20 × 1,522.88
  4. Step 4: Simplify right side
    2,820.80x = 6,443,609.86
  5. Step 5: Solve for x
    x = 6,443,609.86/2,820.80
  6. Step 6: Final answer
    x = 2,284.32

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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.