Home / 5,540.40-7,630.20-5,419.44

Finding the Fourth Proportional to 5,540.40, 7,630.20 and 5,419.44

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Solution

The fourth proportional to 5,540.40, 7,630.20 and 5,419.44 is: 7,463.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,540.40 : 7,630.20 = 5,419.44 : x
  2. Step 2: Convert to fraction form
    5,540.40/7,630.20 = 5,419.44/x
  3. Step 3: Cross multiply
    5,540.40x = 7,630.20 × 5,419.44
  4. Step 4: Simplify right side
    5,540.40x = 41,351,411.09
  5. Step 5: Solve for x
    x = 41,351,411.09/5,540.40
  6. Step 6: Final answer
    x = 7,463.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.