Home / 5,400.81-8,104.86-2,113.49

Finding the Fourth Proportional to 5,400.81, 8,104.86 and 2,113.49

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Solution

The fourth proportional to 5,400.81, 8,104.86 and 2,113.49 is: 3,171.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,400.81 : 8,104.86 = 2,113.49 : x
  2. Step 2: Convert to fraction form
    5,400.81/8,104.86 = 2,113.49/x
  3. Step 3: Cross multiply
    5,400.81x = 8,104.86 × 2,113.49
  4. Step 4: Simplify right side
    5,400.81x = 17,129,560.82
  5. Step 5: Solve for x
    x = 17,129,560.82/5,400.81
  6. Step 6: Final answer
    x = 3,171.67

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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.