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Finding the Fourth Proportional to 7,984.51, 11,018.90 and 4,447.94

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Solution

The fourth proportional to 7,984.51, 11,018.90 and 4,447.94 is: 6,138.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,984.51 : 11,018.90 = 4,447.94 : x
  2. Step 2: Convert to fraction form
    7,984.51/11,018.90 = 4,447.94/x
  3. Step 3: Cross multiply
    7,984.51x = 11,018.90 × 4,447.94
  4. Step 4: Simplify right side
    7,984.51x = 49,011,362.09
  5. Step 5: Solve for x
    x = 49,011,362.09/7,984.51
  6. Step 6: Final answer
    x = 6,138.31

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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.