Home / 5,138.32-7,090.87-2,900.67

Finding the Fourth Proportional to 5,138.32, 7,090.87 and 2,900.67

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Solution

The fourth proportional to 5,138.32, 7,090.87 and 2,900.67 is: 4,002.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.32 : 7,090.87 = 2,900.67 : x
  2. Step 2: Convert to fraction form
    5,138.32/7,090.87 = 2,900.67/x
  3. Step 3: Cross multiply
    5,138.32x = 7,090.87 × 2,900.67
  4. Step 4: Simplify right side
    5,138.32x = 20,568,273.88
  5. Step 5: Solve for x
    x = 20,568,273.88/5,138.32
  6. Step 6: Final answer
    x = 4,002.92

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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.