Home / 2,824.40-4,231.20-1,668.80

Finding the Fourth Proportional to 2,824.40, 4,231.20 and 1,668.80

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Solution

The fourth proportional to 2,824.40, 4,231.20 and 1,668.80 is: 2,500.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,824.40 : 4,231.20 = 1,668.80 : x
  2. Step 2: Convert to fraction form
    2,824.40/4,231.20 = 1,668.80/x
  3. Step 3: Cross multiply
    2,824.40x = 4,231.20 × 1,668.80
  4. Step 4: Simplify right side
    2,824.40x = 7,061,026.56
  5. Step 5: Solve for x
    x = 7,061,026.56/2,824.40
  6. Step 6: Final answer
    x = 2,500.01

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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.