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Finding the Fourth Proportional to 7,074.36, 9,762.78 and 3,887.73

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Solution

The fourth proportional to 7,074.36, 9,762.78 and 3,887.73 is: 5,365.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,074.36 : 9,762.78 = 3,887.73 : x
  2. Step 2: Convert to fraction form
    7,074.36/9,762.78 = 3,887.73/x
  3. Step 3: Cross multiply
    7,074.36x = 9,762.78 × 3,887.73
  4. Step 4: Simplify right side
    7,074.36x = 37,955,052.69
  5. Step 5: Solve for x
    x = 37,955,052.69/7,074.36
  6. Step 6: Final answer
    x = 5,365.16

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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.