Home / 2,965.21-4,091.98-1,689.09

Finding the Fourth Proportional to 2,965.21, 4,091.98 and 1,689.09

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Solution

The fourth proportional to 2,965.21, 4,091.98 and 1,689.09 is: 2,330.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965.21 : 4,091.98 = 1,689.09 : x
  2. Step 2: Convert to fraction form
    2,965.21/4,091.98 = 1,689.09/x
  3. Step 3: Cross multiply
    2,965.21x = 4,091.98 × 1,689.09
  4. Step 4: Simplify right side
    2,965.21x = 6,911,700.37
  5. Step 5: Solve for x
    x = 6,911,700.37/2,965.21
  6. Step 6: Final answer
    x = 2,330.93

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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.