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Finding the Fourth Proportional to 7,362.17, 11,042.78 and 2,978.45

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Solution

The fourth proportional to 7,362.17, 11,042.78 and 2,978.45 is: 4,467.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,362.17 : 11,042.78 = 2,978.45 : x
  2. Step 2: Convert to fraction form
    7,362.17/11,042.78 = 2,978.45/x
  3. Step 3: Cross multiply
    7,362.17x = 11,042.78 × 2,978.45
  4. Step 4: Simplify right side
    7,362.17x = 32,890,297.98
  5. Step 5: Solve for x
    x = 32,890,297.98/7,362.17
  6. Step 6: Final answer
    x = 4,467.48

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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.