Home / 2,176.19-3,003.08-1,291.98

Finding the Fourth Proportional to 2,176.19, 3,003.08 and 1,291.98

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Solution

The fourth proportional to 2,176.19, 3,003.08 and 1,291.98 is: 1,782.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.19 : 3,003.08 = 1,291.98 : x
  2. Step 2: Convert to fraction form
    2,176.19/3,003.08 = 1,291.98/x
  3. Step 3: Cross multiply
    2,176.19x = 3,003.08 × 1,291.98
  4. Step 4: Simplify right side
    2,176.19x = 3,879,912.84
  5. Step 5: Solve for x
    x = 3,879,912.84/2,176.19
  6. Step 6: Final answer
    x = 1,782.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.