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Finding the Fourth Proportional to 8,074.40, 11,145.60 and 7,233.60

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Solution

The fourth proportional to 8,074.40, 11,145.60 and 7,233.60 is: 9,984.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,074.40 : 11,145.60 = 7,233.60 : x
  2. Step 2: Convert to fraction form
    8,074.40/11,145.60 = 7,233.60/x
  3. Step 3: Cross multiply
    8,074.40x = 11,145.60 × 7,233.60
  4. Step 4: Simplify right side
    8,074.40x = 80,622,812.16
  5. Step 5: Solve for x
    x = 80,622,812.16/8,074.40
  6. Step 6: Final answer
    x = 9,984.99

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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.