Home / 3,218.80-4,835.40-3,087.60

Finding the Fourth Proportional to 3,218.80, 4,835.40 and 3,087.60

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Solution

The fourth proportional to 3,218.80, 4,835.40 and 3,087.60 is: 4,638.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.80 : 4,835.40 = 3,087.60 : x
  2. Step 2: Convert to fraction form
    3,218.80/4,835.40 = 3,087.60/x
  3. Step 3: Cross multiply
    3,218.80x = 4,835.40 × 3,087.60
  4. Step 4: Simplify right side
    3,218.80x = 14,929,781.04
  5. Step 5: Solve for x
    x = 14,929,781.04/3,218.80
  6. Step 6: Final answer
    x = 4,638.31

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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.