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Finding the Fourth Proportional to 7,078.80, 10,619.22 and 2,399.22

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Solution

The fourth proportional to 7,078.80, 10,619.22 and 2,399.22 is: 3,599.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078.80 : 10,619.22 = 2,399.22 : x
  2. Step 2: Convert to fraction form
    7,078.80/10,619.22 = 2,399.22/x
  3. Step 3: Cross multiply
    7,078.80x = 10,619.22 × 2,399.22
  4. Step 4: Simplify right side
    7,078.80x = 25,477,845.01
  5. Step 5: Solve for x
    x = 25,477,845.01/7,078.80
  6. Step 6: Final answer
    x = 3,599.18

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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.