Home / 2,965.18-4,091.90-1,638.86

Finding the Fourth Proportional to 2,965.18, 4,091.90 and 1,638.86

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Solution

The fourth proportional to 2,965.18, 4,091.90 and 1,638.86 is: 2,261.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965.18 : 4,091.90 = 1,638.86 : x
  2. Step 2: Convert to fraction form
    2,965.18/4,091.90 = 1,638.86/x
  3. Step 3: Cross multiply
    2,965.18x = 4,091.90 × 1,638.86
  4. Step 4: Simplify right side
    2,965.18x = 6,706,034.87
  5. Step 5: Solve for x
    x = 6,706,034.87/2,965.18
  6. Step 6: Final answer
    x = 2,261.60

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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.