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Finding the Fourth Proportional to 7,886.46, 11,829.60 and 2,955.99

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Solution

The fourth proportional to 7,886.46, 11,829.60 and 2,955.99 is: 4,433.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.46 : 11,829.60 = 2,955.99 : x
  2. Step 2: Convert to fraction form
    7,886.46/11,829.60 = 2,955.99/x
  3. Step 3: Cross multiply
    7,886.46x = 11,829.60 × 2,955.99
  4. Step 4: Simplify right side
    7,886.46x = 34,968,179.30
  5. Step 5: Solve for x
    x = 34,968,179.30/7,886.46
  6. Step 6: Final answer
    x = 4,433.95

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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.