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Finding the Fourth Proportional to 7,153.09, 10,728.48 and 1,957.75

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Solution

The fourth proportional to 7,153.09, 10,728.48 and 1,957.75 is: 2,936.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.09 : 10,728.48 = 1,957.75 : x
  2. Step 2: Convert to fraction form
    7,153.09/10,728.48 = 1,957.75/x
  3. Step 3: Cross multiply
    7,153.09x = 10,728.48 × 1,957.75
  4. Step 4: Simplify right side
    7,153.09x = 21,003,662.24
  5. Step 5: Solve for x
    x = 21,003,662.24/7,153.09
  6. Step 6: Final answer
    x = 2,936.31

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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.