Home / 8,980.20-13,471.23-3,438.21

Finding the Fourth Proportional to 8,980.20, 13,471.23 and 3,438.21

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Solution

The fourth proportional to 8,980.20, 13,471.23 and 3,438.21 is: 5,157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.20 : 13,471.23 = 3,438.21 : x
  2. Step 2: Convert to fraction form
    8,980.20/13,471.23 = 3,438.21/x
  3. Step 3: Cross multiply
    8,980.20x = 13,471.23 × 3,438.21
  4. Step 4: Simplify right side
    8,980.20x = 46,316,917.70
  5. Step 5: Solve for x
    x = 46,316,917.70/8,980.20
  6. Step 6: Final answer
    x = 5,157.67

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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.