Home / 2,980.11-4,106.86-2,183.67

Finding the Fourth Proportional to 2,980.11, 4,106.86 and 2,183.67

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Solution

The fourth proportional to 2,980.11, 4,106.86 and 2,183.67 is: 3,009.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.11 : 4,106.86 = 2,183.67 : x
  2. Step 2: Convert to fraction form
    2,980.11/4,106.86 = 2,183.67/x
  3. Step 3: Cross multiply
    2,980.11x = 4,106.86 × 2,183.67
  4. Step 4: Simplify right side
    2,980.11x = 8,968,026.98
  5. Step 5: Solve for x
    x = 8,968,026.98/2,980.11
  6. Step 6: Final answer
    x = 3,009.29

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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.