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Finding the Fourth Proportional to 7,888.85, 11,829.81 and 2,955.03

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Solution

The fourth proportional to 7,888.85, 11,829.81 and 2,955.03 is: 4,431.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888.85 : 11,829.81 = 2,955.03 : x
  2. Step 2: Convert to fraction form
    7,888.85/11,829.81 = 2,955.03/x
  3. Step 3: Cross multiply
    7,888.85x = 11,829.81 × 2,955.03
  4. Step 4: Simplify right side
    7,888.85x = 34,957,443.44
  5. Step 5: Solve for x
    x = 34,957,443.44/7,888.85
  6. Step 6: Final answer
    x = 4,431.25

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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.