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Finding the Fourth Proportional to 9,388.94, 12,958.11 and 5,409.95

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Solution

The fourth proportional to 9,388.94, 12,958.11 and 5,409.95 is: 7,466.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,388.94 : 12,958.11 = 5,409.95 : x
  2. Step 2: Convert to fraction form
    9,388.94/12,958.11 = 5,409.95/x
  3. Step 3: Cross multiply
    9,388.94x = 12,958.11 × 5,409.95
  4. Step 4: Simplify right side
    9,388.94x = 70,102,662.40
  5. Step 5: Solve for x
    x = 70,102,662.40/9,388.94
  6. Step 6: Final answer
    x = 7,466.52

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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.