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Finding the Fourth Proportional to 7,645.22, 10,571.22 and 6,661.07

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Solution

The fourth proportional to 7,645.22, 10,571.22 and 6,661.07 is: 9,210.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,645.22 : 10,571.22 = 6,661.07 : x
  2. Step 2: Convert to fraction form
    7,645.22/10,571.22 = 6,661.07/x
  3. Step 3: Cross multiply
    7,645.22x = 10,571.22 × 6,661.07
  4. Step 4: Simplify right side
    7,645.22x = 70,415,662.83
  5. Step 5: Solve for x
    x = 70,415,662.83/7,645.22
  6. Step 6: Final answer
    x = 9,210.41

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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.