Home / 5,511.90-8,255.70-3,316.80

Finding the Fourth Proportional to 5,511.90, 8,255.70 and 3,316.80

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Solution

The fourth proportional to 5,511.90, 8,255.70 and 3,316.80 is: 4,967.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,511.90 : 8,255.70 = 3,316.80 : x
  2. Step 2: Convert to fraction form
    5,511.90/8,255.70 = 3,316.80/x
  3. Step 3: Cross multiply
    5,511.90x = 8,255.70 × 3,316.80
  4. Step 4: Simplify right side
    5,511.90x = 27,382,505.76
  5. Step 5: Solve for x
    x = 27,382,505.76/5,511.90
  6. Step 6: Final answer
    x = 4,967.89

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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.