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Finding the Fourth Proportional to 5,540.90, 8,295.15 and 5,378.90

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Solution

The fourth proportional to 5,540.90, 8,295.15 and 5,378.90 is: 8,052.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,540.90 : 8,295.15 = 5,378.90 : x
  2. Step 2: Convert to fraction form
    5,540.90/8,295.15 = 5,378.90/x
  3. Step 3: Cross multiply
    5,540.90x = 8,295.15 × 5,378.90
  4. Step 4: Simplify right side
    5,540.90x = 44,618,782.34
  5. Step 5: Solve for x
    x = 44,618,782.34/5,540.90
  6. Step 6: Final answer
    x = 8,052.62

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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.