Home / 3,720.75-5,580.26-1,087.67

Finding the Fourth Proportional to 3,720.75, 5,580.26 and 1,087.67

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Solution

The fourth proportional to 3,720.75, 5,580.26 and 1,087.67 is: 1,631.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.75 : 5,580.26 = 1,087.67 : x
  2. Step 2: Convert to fraction form
    3,720.75/5,580.26 = 1,087.67/x
  3. Step 3: Cross multiply
    3,720.75x = 5,580.26 × 1,087.67
  4. Step 4: Simplify right side
    3,720.75x = 6,069,481.39
  5. Step 5: Solve for x
    x = 6,069,481.39/3,720.75
  6. Step 6: Final answer
    x = 1,631.25

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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.