Home / 2,087.80-3,135.30-1,360.60

Finding the Fourth Proportional to 2,087.80, 3,135.30 and 1,360.60

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Solution

The fourth proportional to 2,087.80, 3,135.30 and 1,360.60 is: 2,043.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.80 : 3,135.30 = 1,360.60 : x
  2. Step 2: Convert to fraction form
    2,087.80/3,135.30 = 1,360.60/x
  3. Step 3: Cross multiply
    2,087.80x = 3,135.30 × 1,360.60
  4. Step 4: Simplify right side
    2,087.80x = 4,265,889.18
  5. Step 5: Solve for x
    x = 4,265,889.18/2,087.80
  6. Step 6: Final answer
    x = 2,043.25

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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.