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Finding the Fourth Proportional to 9,387.58, 12,928.44 and 9,183.46

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Solution

The fourth proportional to 9,387.58, 12,928.44 and 9,183.46 is: 12,647.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,387.58 : 12,928.44 = 9,183.46 : x
  2. Step 2: Convert to fraction form
    9,387.58/12,928.44 = 9,183.46/x
  3. Step 3: Cross multiply
    9,387.58x = 12,928.44 × 9,183.46
  4. Step 4: Simplify right side
    9,387.58x = 118,727,811.60
  5. Step 5: Solve for x
    x = 118,727,811.60/9,387.58
  6. Step 6: Final answer
    x = 12,647.33

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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.