Home / 2,176.36-3,261.68-1,189.60

Finding the Fourth Proportional to 2,176.36, 3,261.68 and 1,189.60

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Solution

The fourth proportional to 2,176.36, 3,261.68 and 1,189.60 is: 1,782.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.36 : 3,261.68 = 1,189.60 : x
  2. Step 2: Convert to fraction form
    2,176.36/3,261.68 = 1,189.60/x
  3. Step 3: Cross multiply
    2,176.36x = 3,261.68 × 1,189.60
  4. Step 4: Simplify right side
    2,176.36x = 3,880,094.53
  5. Step 5: Solve for x
    x = 3,880,094.53/2,176.36
  6. Step 6: Final answer
    x = 1,782.84

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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.