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Finding the Fourth Proportional to 7,157.36, 10,736.64 and 1,963.28

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Solution

The fourth proportional to 7,157.36, 10,736.64 and 1,963.28 is: 2,945.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.36 : 10,736.64 = 1,963.28 : x
  2. Step 2: Convert to fraction form
    7,157.36/10,736.64 = 1,963.28/x
  3. Step 3: Cross multiply
    7,157.36x = 10,736.64 × 1,963.28
  4. Step 4: Simplify right side
    7,157.36x = 21,079,030.58
  5. Step 5: Solve for x
    x = 21,079,030.58/7,157.36
  6. Step 6: Final answer
    x = 2,945.08

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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.