Home / 5,078.90-7,621.26-2,738.89

Finding the Fourth Proportional to 5,078.90, 7,621.26 and 2,738.89

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Solution

The fourth proportional to 5,078.90, 7,621.26 and 2,738.89 is: 4,109.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.90 : 7,621.26 = 2,738.89 : x
  2. Step 2: Convert to fraction form
    5,078.90/7,621.26 = 2,738.89/x
  3. Step 3: Cross multiply
    5,078.90x = 7,621.26 × 2,738.89
  4. Step 4: Simplify right side
    5,078.90x = 20,873,792.06
  5. Step 5: Solve for x
    x = 20,873,792.06/5,078.90
  6. Step 6: Final answer
    x = 4,109.90

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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.