Home / 5,855.40-8,780.94-2,156.67

Finding the Fourth Proportional to 5,855.40, 8,780.94 and 2,156.67

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Solution

The fourth proportional to 5,855.40, 8,780.94 and 2,156.67 is: 3,234.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,855.40 : 8,780.94 = 2,156.67 : x
  2. Step 2: Convert to fraction form
    5,855.40/8,780.94 = 2,156.67/x
  3. Step 3: Cross multiply
    5,855.40x = 8,780.94 × 2,156.67
  4. Step 4: Simplify right side
    5,855.40x = 18,937,589.87
  5. Step 5: Solve for x
    x = 18,937,589.87/5,855.40
  6. Step 6: Final answer
    x = 3,234.21

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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.