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Finding the Fourth Proportional to 7,153.98, 9,873.09 and 3,968.27

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Solution

The fourth proportional to 7,153.98, 9,873.09 and 3,968.27 is: 5,476.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.98 : 9,873.09 = 3,968.27 : x
  2. Step 2: Convert to fraction form
    7,153.98/9,873.09 = 3,968.27/x
  3. Step 3: Cross multiply
    7,153.98x = 9,873.09 × 3,968.27
  4. Step 4: Simplify right side
    7,153.98x = 39,179,130.05
  5. Step 5: Solve for x
    x = 39,179,130.05/7,153.98
  6. Step 6: Final answer
    x = 5,476.55

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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.