Home / 2,176.65-3,268.62-1,188.90

Finding the Fourth Proportional to 2,176.65, 3,268.62 and 1,188.90

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Solution

The fourth proportional to 2,176.65, 3,268.62 and 1,188.90 is: 1,785.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.65 : 3,268.62 = 1,188.90 : x
  2. Step 2: Convert to fraction form
    2,176.65/3,268.62 = 1,188.90/x
  3. Step 3: Cross multiply
    2,176.65x = 3,268.62 × 1,188.90
  4. Step 4: Simplify right side
    2,176.65x = 3,886,062.32
  5. Step 5: Solve for x
    x = 3,886,062.32/2,176.65
  6. Step 6: Final answer
    x = 1,785.34

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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.