Home / 2,964.80-4,091.40-1,638.60

Finding the Fourth Proportional to 2,964.80, 4,091.40 and 1,638.60

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Solution

The fourth proportional to 2,964.80, 4,091.40 and 1,638.60 is: 2,261.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,964.80 : 4,091.40 = 1,638.60 : x
  2. Step 2: Convert to fraction form
    2,964.80/4,091.40 = 1,638.60/x
  3. Step 3: Cross multiply
    2,964.80x = 4,091.40 × 1,638.60
  4. Step 4: Simplify right side
    2,964.80x = 6,704,168.04
  5. Step 5: Solve for x
    x = 6,704,168.04/2,964.80
  6. Step 6: Final answer
    x = 2,261.26

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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.