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Finding the Fourth Proportional to 5,466.90, 8,190.90 and 2,539.20

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Solution

The fourth proportional to 5,466.90, 8,190.90 and 2,539.20 is: 3,804.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,466.90 : 8,190.90 = 2,539.20 : x
  2. Step 2: Convert to fraction form
    5,466.90/8,190.90 = 2,539.20/x
  3. Step 3: Cross multiply
    5,466.90x = 8,190.90 × 2,539.20
  4. Step 4: Simplify right side
    5,466.90x = 20,798,333.28
  5. Step 5: Solve for x
    x = 20,798,333.28/5,466.90
  6. Step 6: Final answer
    x = 3,804.41

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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.