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Finding the Fourth Proportional to 9,309.78, 13,964.67 and 4,928.22

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Solution

The fourth proportional to 9,309.78, 13,964.67 and 4,928.22 is: 7,392.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,309.78 : 13,964.67 = 4,928.22 : x
  2. Step 2: Convert to fraction form
    9,309.78/13,964.67 = 4,928.22/x
  3. Step 3: Cross multiply
    9,309.78x = 13,964.67 × 4,928.22
  4. Step 4: Simplify right side
    9,309.78x = 68,820,965.99
  5. Step 5: Solve for x
    x = 68,820,965.99/9,309.78
  6. Step 6: Final answer
    x = 7,392.33

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.