Home / 2,824.40-3,899.61-2,160.09

Finding the Fourth Proportional to 2,824.40, 3,899.61 and 2,160.09

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Solution

The fourth proportional to 2,824.40, 3,899.61 and 2,160.09 is: 2,982.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,824.40 : 3,899.61 = 2,160.09 : x
  2. Step 2: Convert to fraction form
    2,824.40/3,899.61 = 2,160.09/x
  3. Step 3: Cross multiply
    2,824.40x = 3,899.61 × 2,160.09
  4. Step 4: Simplify right side
    2,824.40x = 8,423,508.56
  5. Step 5: Solve for x
    x = 8,423,508.56/2,824.40
  6. Step 6: Final answer
    x = 2,982.41

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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.