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Finding the Fourth Proportional to 9,696.31, 13,382.35 and 5,921.64

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Solution

The fourth proportional to 9,696.31, 13,382.35 and 5,921.64 is: 8,172.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,696.31 : 13,382.35 = 5,921.64 : x
  2. Step 2: Convert to fraction form
    9,696.31/13,382.35 = 5,921.64/x
  3. Step 3: Cross multiply
    9,696.31x = 13,382.35 × 5,921.64
  4. Step 4: Simplify right side
    9,696.31x = 79,245,525.69
  5. Step 5: Solve for x
    x = 79,245,525.69/9,696.31
  6. Step 6: Final answer
    x = 8,172.75

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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.