Home / 5,455.84-8,185.40-1,945.39

Finding the Fourth Proportional to 5,455.84, 8,185.40 and 1,945.39

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Solution

The fourth proportional to 5,455.84, 8,185.40 and 1,945.39 is: 2,918.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.84 : 8,185.40 = 1,945.39 : x
  2. Step 2: Convert to fraction form
    5,455.84/8,185.40 = 1,945.39/x
  3. Step 3: Cross multiply
    5,455.84x = 8,185.40 × 1,945.39
  4. Step 4: Simplify right side
    5,455.84x = 15,923,795.31
  5. Step 5: Solve for x
    x = 15,923,795.31/5,455.84
  6. Step 6: Final answer
    x = 2,918.67

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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.