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Finding the Fourth Proportional to 8,980.22, 12,382.44 and 6,738.54

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Solution

The fourth proportional to 8,980.22, 12,382.44 and 6,738.54 is: 9,291.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.22 : 12,382.44 = 6,738.54 : x
  2. Step 2: Convert to fraction form
    8,980.22/12,382.44 = 6,738.54/x
  3. Step 3: Cross multiply
    8,980.22x = 12,382.44 × 6,738.54
  4. Step 4: Simplify right side
    8,980.22x = 83,439,567.24
  5. Step 5: Solve for x
    x = 83,439,567.24/8,980.22
  6. Step 6: Final answer
    x = 9,291.49

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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.