Home / 5,092.79-7,028.35-2,855.40

Finding the Fourth Proportional to 5,092.79, 7,028.35 and 2,855.40

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Solution

The fourth proportional to 5,092.79, 7,028.35 and 2,855.40 is: 3,940.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,092.79 : 7,028.35 = 2,855.40 : x
  2. Step 2: Convert to fraction form
    5,092.79/7,028.35 = 2,855.40/x
  3. Step 3: Cross multiply
    5,092.79x = 7,028.35 × 2,855.40
  4. Step 4: Simplify right side
    5,092.79x = 20,068,743.45
  5. Step 5: Solve for x
    x = 20,068,743.45/5,092.79
  6. Step 6: Final answer
    x = 3,940.62

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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.