Home / 2,847.68-3,928.20-1,668.50

Finding the Fourth Proportional to 2,847.68, 3,928.20 and 1,668.50

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Solution

The fourth proportional to 2,847.68, 3,928.20 and 1,668.50 is: 2,301.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.68 : 3,928.20 = 1,668.50 : x
  2. Step 2: Convert to fraction form
    2,847.68/3,928.20 = 1,668.50/x
  3. Step 3: Cross multiply
    2,847.68x = 3,928.20 × 1,668.50
  4. Step 4: Simplify right side
    2,847.68x = 6,554,201.70
  5. Step 5: Solve for x
    x = 6,554,201.70/2,847.68
  6. Step 6: Final answer
    x = 2,301.59

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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.