Home / 5,478.83-8,211.25-2,668.34

Finding the Fourth Proportional to 5,478.83, 8,211.25 and 2,668.34

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Solution

The fourth proportional to 5,478.83, 8,211.25 and 2,668.34 is: 3,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.83 : 8,211.25 = 2,668.34 : x
  2. Step 2: Convert to fraction form
    5,478.83/8,211.25 = 2,668.34/x
  3. Step 3: Cross multiply
    5,478.83x = 8,211.25 × 2,668.34
  4. Step 4: Simplify right side
    5,478.83x = 21,910,365.77
  5. Step 5: Solve for x
    x = 21,910,365.77/5,478.83
  6. Step 6: Final answer
    x = 3,999.10

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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.