Home / 2,176.54-3,261.76-1,189.35

Finding the Fourth Proportional to 2,176.54, 3,261.76 and 1,189.35

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Solution

The fourth proportional to 2,176.54, 3,261.76 and 1,189.35 is: 1,782.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.54 : 3,261.76 = 1,189.35 : x
  2. Step 2: Convert to fraction form
    2,176.54/3,261.76 = 1,189.35/x
  3. Step 3: Cross multiply
    2,176.54x = 3,261.76 × 1,189.35
  4. Step 4: Simplify right side
    2,176.54x = 3,879,374.26
  5. Step 5: Solve for x
    x = 3,879,374.26/2,176.54
  6. Step 6: Final answer
    x = 1,782.36

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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.