Home / 3,138.05-4,707.86-2,215.41

Finding the Fourth Proportional to 3,138.05, 4,707.86 and 2,215.41

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Solution

The fourth proportional to 3,138.05, 4,707.86 and 2,215.41 is: 3,323.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.05 : 4,707.86 = 2,215.41 : x
  2. Step 2: Convert to fraction form
    3,138.05/4,707.86 = 2,215.41/x
  3. Step 3: Cross multiply
    3,138.05x = 4,707.86 × 2,215.41
  4. Step 4: Simplify right side
    3,138.05x = 10,429,840.12
  5. Step 5: Solve for x
    x = 10,429,840.12/3,138.05
  6. Step 6: Final answer
    x = 3,323.67

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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.