Home / 3,459.03-5,187.78-1,378.65

Finding the Fourth Proportional to 3,459.03, 5,187.78 and 1,378.65

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Solution

The fourth proportional to 3,459.03, 5,187.78 and 1,378.65 is: 2,067.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.03 : 5,187.78 = 1,378.65 : x
  2. Step 2: Convert to fraction form
    3,459.03/5,187.78 = 1,378.65/x
  3. Step 3: Cross multiply
    3,459.03x = 5,187.78 × 1,378.65
  4. Step 4: Simplify right side
    3,459.03x = 7,152,132.90
  5. Step 5: Solve for x
    x = 7,152,132.90/3,459.03
  6. Step 6: Final answer
    x = 2,067.67

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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.