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Finding the Fourth Proportional to 8,145.93, 11,240.88 and 7,907.07

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Solution

The fourth proportional to 8,145.93, 11,240.88 and 7,907.07 is: 10,911.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.93 : 11,240.88 = 7,907.07 : x
  2. Step 2: Convert to fraction form
    8,145.93/11,240.88 = 7,907.07/x
  3. Step 3: Cross multiply
    8,145.93x = 11,240.88 × 7,907.07
  4. Step 4: Simplify right side
    8,145.93x = 88,882,425.02
  5. Step 5: Solve for x
    x = 88,882,425.02/8,145.93
  6. Step 6: Final answer
    x = 10,911.27

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Half scale
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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.