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Finding the Fourth Proportional to 6,762.88, 9,331.88 and 3,778.23

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Solution

The fourth proportional to 6,762.88, 9,331.88 and 3,778.23 is: 5,213.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,762.88 : 9,331.88 = 3,778.23 : x
  2. Step 2: Convert to fraction form
    6,762.88/9,331.88 = 3,778.23/x
  3. Step 3: Cross multiply
    6,762.88x = 9,331.88 × 3,778.23
  4. Step 4: Simplify right side
    6,762.88x = 35,257,988.97
  5. Step 5: Solve for x
    x = 35,257,988.97/6,762.88
  6. Step 6: Final answer
    x = 5,213.46

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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.