Home / 2,028.60-2,802.48-1,890.30

Finding the Fourth Proportional to 2,028.60, 2,802.48 and 1,890.30

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Solution

The fourth proportional to 2,028.60, 2,802.48 and 1,890.30 is: 2,611.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.60 : 2,802.48 = 1,890.30 : x
  2. Step 2: Convert to fraction form
    2,028.60/2,802.48 = 1,890.30/x
  3. Step 3: Cross multiply
    2,028.60x = 2,802.48 × 1,890.30
  4. Step 4: Simplify right side
    2,028.60x = 5,297,527.94
  5. Step 5: Solve for x
    x = 5,297,527.94/2,028.60
  6. Step 6: Final answer
    x = 2,611.42

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1.5x scale

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.