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Finding the Fourth Proportional to 9,331.74, 12,890.07 and 6,969.78

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Solution

The fourth proportional to 9,331.74, 12,890.07 and 6,969.78 is: 9,627.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,331.74 : 12,890.07 = 6,969.78 : x
  2. Step 2: Convert to fraction form
    9,331.74/12,890.07 = 6,969.78/x
  3. Step 3: Cross multiply
    9,331.74x = 12,890.07 × 6,969.78
  4. Step 4: Simplify right side
    9,331.74x = 89,840,952.08
  5. Step 5: Solve for x
    x = 89,840,952.08/9,331.74
  6. Step 6: Final answer
    x = 9,627.46

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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.