Home / 5,420.76-8,127.60-2,608.08

Finding the Fourth Proportional to 5,420.76, 8,127.60 and 2,608.08

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Solution

The fourth proportional to 5,420.76, 8,127.60 and 2,608.08 is: 3,910.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.76 : 8,127.60 = 2,608.08 : x
  2. Step 2: Convert to fraction form
    5,420.76/8,127.60 = 2,608.08/x
  3. Step 3: Cross multiply
    5,420.76x = 8,127.60 × 2,608.08
  4. Step 4: Simplify right side
    5,420.76x = 21,197,431.01
  5. Step 5: Solve for x
    x = 21,197,431.01/5,420.76
  6. Step 6: Final answer
    x = 3,910.42

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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.