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Finding the Fourth Proportional to 9,365.42, 12,928.06 and 6,384.27

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Solution

The fourth proportional to 9,365.42, 12,928.06 and 6,384.27 is: 8,812.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,365.42 : 12,928.06 = 6,384.27 : x
  2. Step 2: Convert to fraction form
    9,365.42/12,928.06 = 6,384.27/x
  3. Step 3: Cross multiply
    9,365.42x = 12,928.06 × 6,384.27
  4. Step 4: Simplify right side
    9,365.42x = 82,536,173.44
  5. Step 5: Solve for x
    x = 82,536,173.44/9,365.42
  6. Step 6: Final answer
    x = 8,812.86

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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.