Home / 3,105.06-4,284.87-1,707.78

Finding the Fourth Proportional to 3,105.06, 4,284.87 and 1,707.78

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Solution

The fourth proportional to 3,105.06, 4,284.87 and 1,707.78 is: 2,356.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.06 : 4,284.87 = 1,707.78 : x
  2. Step 2: Convert to fraction form
    3,105.06/4,284.87 = 1,707.78/x
  3. Step 3: Cross multiply
    3,105.06x = 4,284.87 × 1,707.78
  4. Step 4: Simplify right side
    3,105.06x = 7,317,615.29
  5. Step 5: Solve for x
    x = 7,317,615.29/3,105.06
  6. Step 6: Final answer
    x = 2,356.67

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1.5x scale

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.