Home / 3,977.15-5,967.75-1,638.95

Finding the Fourth Proportional to 3,977.15, 5,967.75 and 1,638.95

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Solution

The fourth proportional to 3,977.15, 5,967.75 and 1,638.95 is: 2,459.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.15 : 5,967.75 = 1,638.95 : x
  2. Step 2: Convert to fraction form
    3,977.15/5,967.75 = 1,638.95/x
  3. Step 3: Cross multiply
    3,977.15x = 5,967.75 × 1,638.95
  4. Step 4: Simplify right side
    3,977.15x = 9,780,843.86
  5. Step 5: Solve for x
    x = 9,780,843.86/3,977.15
  6. Step 6: Final answer
    x = 2,459.26

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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.