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Finding the Fourth Proportional to 7,963.44, 10,953 and 6,388.08

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Solution

The fourth proportional to 7,963.44, 10,953 and 6,388.08 is: 8,786.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,963.44 : 10,953 = 6,388.08 : x
  2. Step 2: Convert to fraction form
    7,963.44/10,953 = 6,388.08/x
  3. Step 3: Cross multiply
    7,963.44x = 10,953 × 6,388.08
  4. Step 4: Simplify right side
    7,963.44x = 69,968,640.24
  5. Step 5: Solve for x
    x = 69,968,640.24/7,963.44
  6. Step 6: Final answer
    x = 8,786.23

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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.