Home / 5,118.21-7,677.35-1,786.44

Finding the Fourth Proportional to 5,118.21, 7,677.35 and 1,786.44

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Solution

The fourth proportional to 5,118.21, 7,677.35 and 1,786.44 is: 2,679.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.21 : 7,677.35 = 1,786.44 : x
  2. Step 2: Convert to fraction form
    5,118.21/7,677.35 = 1,786.44/x
  3. Step 3: Cross multiply
    5,118.21x = 7,677.35 × 1,786.44
  4. Step 4: Simplify right side
    5,118.21x = 13,715,125.80
  5. Step 5: Solve for x
    x = 13,715,125.80/5,118.21
  6. Step 6: Final answer
    x = 2,679.67

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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.