Home / 5,155.83-7,115.04-2,797.99

Finding the Fourth Proportional to 5,155.83, 7,115.04 and 2,797.99

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Solution

The fourth proportional to 5,155.83, 7,115.04 and 2,797.99 is: 3,861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.83 : 7,115.04 = 2,797.99 : x
  2. Step 2: Convert to fraction form
    5,155.83/7,115.04 = 2,797.99/x
  3. Step 3: Cross multiply
    5,155.83x = 7,115.04 × 2,797.99
  4. Step 4: Simplify right side
    5,155.83x = 19,907,792.98
  5. Step 5: Solve for x
    x = 19,907,792.98/5,155.83
  6. Step 6: Final answer
    x = 3,861.22

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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.