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Finding the Fourth Proportional to 9,954.64, 14,928.40 and 3,289.91

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Solution

The fourth proportional to 9,954.64, 14,928.40 and 3,289.91 is: 4,933.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,954.64 : 14,928.40 = 3,289.91 : x
  2. Step 2: Convert to fraction form
    9,954.64/14,928.40 = 3,289.91/x
  3. Step 3: Cross multiply
    9,954.64x = 14,928.40 × 3,289.91
  4. Step 4: Simplify right side
    9,954.64x = 49,113,017.80
  5. Step 5: Solve for x
    x = 49,113,017.80/9,954.64
  6. Step 6: Final answer
    x = 4,933.68

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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.