Home / 2,120.04-3,177.96-1,939.68

Finding the Fourth Proportional to 2,120.04, 3,177.96 and 1,939.68

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Solution

The fourth proportional to 2,120.04, 3,177.96 and 1,939.68 is: 2,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.04 : 3,177.96 = 1,939.68 : x
  2. Step 2: Convert to fraction form
    2,120.04/3,177.96 = 1,939.68/x
  3. Step 3: Cross multiply
    2,120.04x = 3,177.96 × 1,939.68
  4. Step 4: Simplify right side
    2,120.04x = 6,164,225.45
  5. Step 5: Solve for x
    x = 6,164,225.45/2,120.04
  6. Step 6: Final answer
    x = 2,907.60

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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.