Home / 2,005.90-3,012.45-1,458.70

Finding the Fourth Proportional to 2,005.90, 3,012.45 and 1,458.70

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Solution

The fourth proportional to 2,005.90, 3,012.45 and 1,458.70 is: 2,190.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.90 : 3,012.45 = 1,458.70 : x
  2. Step 2: Convert to fraction form
    2,005.90/3,012.45 = 1,458.70/x
  3. Step 3: Cross multiply
    2,005.90x = 3,012.45 × 1,458.70
  4. Step 4: Simplify right side
    2,005.90x = 4,394,260.82
  5. Step 5: Solve for x
    x = 4,394,260.82/2,005.90
  6. Step 6: Final answer
    x = 2,190.67

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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.