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Finding the Fourth Proportional to 7,357.45, 11,040.90 and 4,072.90

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Solution

The fourth proportional to 7,357.45, 11,040.90 and 4,072.90 is: 6,111.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,357.45 : 11,040.90 = 4,072.90 : x
  2. Step 2: Convert to fraction form
    7,357.45/11,040.90 = 4,072.90/x
  3. Step 3: Cross multiply
    7,357.45x = 11,040.90 × 4,072.90
  4. Step 4: Simplify right side
    7,357.45x = 44,968,481.61
  5. Step 5: Solve for x
    x = 44,968,481.61/7,357.45
  6. Step 6: Final answer
    x = 6,111.97

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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.