Home / 1,905.87-2,626.14-1,781.67

Finding the Fourth Proportional to 1,905.87, 2,626.14 and 1,781.67

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Solution

The fourth proportional to 1,905.87, 2,626.14 and 1,781.67 is: 2,455.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.87 : 2,626.14 = 1,781.67 : x
  2. Step 2: Convert to fraction form
    1,905.87/2,626.14 = 1,781.67/x
  3. Step 3: Cross multiply
    1,905.87x = 2,626.14 × 1,781.67
  4. Step 4: Simplify right side
    1,905.87x = 4,678,914.85
  5. Step 5: Solve for x
    x = 4,678,914.85/1,905.87
  6. Step 6: Final answer
    x = 2,455.00

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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.