Home / 3,425.48-5,138.99-1,085.62

Finding the Fourth Proportional to 3,425.48, 5,138.99 and 1,085.62

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Solution

The fourth proportional to 3,425.48, 5,138.99 and 1,085.62 is: 1,628.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.48 : 5,138.99 = 1,085.62 : x
  2. Step 2: Convert to fraction form
    3,425.48/5,138.99 = 1,085.62/x
  3. Step 3: Cross multiply
    3,425.48x = 5,138.99 × 1,085.62
  4. Step 4: Simplify right side
    3,425.48x = 5,578,972.05
  5. Step 5: Solve for x
    x = 5,578,972.05/3,425.48
  6. Step 6: Final answer
    x = 1,628.67

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1.5x scale

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.