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Finding the Fourth Proportional to 9,180.88, 12,669.88 and 6,496.90

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Solution

The fourth proportional to 9,180.88, 12,669.88 and 6,496.90 is: 8,965.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,180.88 : 12,669.88 = 6,496.90 : x
  2. Step 2: Convert to fraction form
    9,180.88/12,669.88 = 6,496.90/x
  3. Step 3: Cross multiply
    9,180.88x = 12,669.88 × 6,496.90
  4. Step 4: Simplify right side
    9,180.88x = 82,314,943.37
  5. Step 5: Solve for x
    x = 82,314,943.37/9,180.88
  6. Step 6: Final answer
    x = 8,965.91

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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.