Home / 2,020.40-3,030.60-1,874.60

Finding the Fourth Proportional to 2,020.40, 3,030.60 and 1,874.60

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Solution

The fourth proportional to 2,020.40, 3,030.60 and 1,874.60 is: 2,811.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.40 : 3,030.60 = 1,874.60 : x
  2. Step 2: Convert to fraction form
    2,020.40/3,030.60 = 1,874.60/x
  3. Step 3: Cross multiply
    2,020.40x = 3,030.60 × 1,874.60
  4. Step 4: Simplify right side
    2,020.40x = 5,681,162.76
  5. Step 5: Solve for x
    x = 5,681,162.76/2,020.40
  6. Step 6: Final answer
    x = 2,811.90

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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.