Home / 4,906.55-7,355.70-1,986.90

Finding the Fourth Proportional to 4,906.55, 7,355.70 and 1,986.90

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Solution

The fourth proportional to 4,906.55, 7,355.70 and 1,986.90 is: 2,978.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,906.55 : 7,355.70 = 1,986.90 : x
  2. Step 2: Convert to fraction form
    4,906.55/7,355.70 = 1,986.90/x
  3. Step 3: Cross multiply
    4,906.55x = 7,355.70 × 1,986.90
  4. Step 4: Simplify right side
    4,906.55x = 14,615,040.33
  5. Step 5: Solve for x
    x = 14,615,040.33/4,906.55
  6. Step 6: Final answer
    x = 2,978.68

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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.