Home / 3,020.90-4,165.56-1,900.53

Finding the Fourth Proportional to 3,020.90, 4,165.56 and 1,900.53

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Solution

The fourth proportional to 3,020.90, 4,165.56 and 1,900.53 is: 2,620.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.90 : 4,165.56 = 1,900.53 : x
  2. Step 2: Convert to fraction form
    3,020.90/4,165.56 = 1,900.53/x
  3. Step 3: Cross multiply
    3,020.90x = 4,165.56 × 1,900.53
  4. Step 4: Simplify right side
    3,020.90x = 7,916,771.75
  5. Step 5: Solve for x
    x = 7,916,771.75/3,020.90
  6. Step 6: Final answer
    x = 2,620.67

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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.