Home / 2,087.21-2,880.66-1,190.94

Finding the Fourth Proportional to 2,087.21, 2,880.66 and 1,190.94

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Solution

The fourth proportional to 2,087.21, 2,880.66 and 1,190.94 is: 1,643.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.21 : 2,880.66 = 1,190.94 : x
  2. Step 2: Convert to fraction form
    2,087.21/2,880.66 = 1,190.94/x
  3. Step 3: Cross multiply
    2,087.21x = 2,880.66 × 1,190.94
  4. Step 4: Simplify right side
    2,087.21x = 3,430,693.22
  5. Step 5: Solve for x
    x = 3,430,693.22/2,087.21
  6. Step 6: Final answer
    x = 1,643.67

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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.