Home / 5,511.70-8,255.40-3,859.30

Finding the Fourth Proportional to 5,511.70, 8,255.40 and 3,859.30

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Solution

The fourth proportional to 5,511.70, 8,255.40 and 3,859.30 is: 5,780.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,511.70 : 8,255.40 = 3,859.30 : x
  2. Step 2: Convert to fraction form
    5,511.70/8,255.40 = 3,859.30/x
  3. Step 3: Cross multiply
    5,511.70x = 8,255.40 × 3,859.30
  4. Step 4: Simplify right side
    5,511.70x = 31,860,065.22
  5. Step 5: Solve for x
    x = 31,860,065.22/5,511.70
  6. Step 6: Final answer
    x = 5,780.44

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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.