Home / 5,405.92-8,110.14-2,118.12

Finding the Fourth Proportional to 5,405.92, 8,110.14 and 2,118.12

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Solution

The fourth proportional to 5,405.92, 8,110.14 and 2,118.12 is: 3,177.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.92 : 8,110.14 = 2,118.12 : x
  2. Step 2: Convert to fraction form
    5,405.92/8,110.14 = 2,118.12/x
  3. Step 3: Cross multiply
    5,405.92x = 8,110.14 × 2,118.12
  4. Step 4: Simplify right side
    5,405.92x = 17,178,249.74
  5. Step 5: Solve for x
    x = 17,178,249.74/5,405.92
  6. Step 6: Final answer
    x = 3,177.67

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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.