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Finding the Fourth Proportional to 7,959.38, 11,914.43 and 7,278.98

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Solution

The fourth proportional to 7,959.38, 11,914.43 and 7,278.98 is: 10,895.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.38 : 11,914.43 = 7,278.98 : x
  2. Step 2: Convert to fraction form
    7,959.38/11,914.43 = 7,278.98/x
  3. Step 3: Cross multiply
    7,959.38x = 11,914.43 × 7,278.98
  4. Step 4: Simplify right side
    7,959.38x = 86,724,801.71
  5. Step 5: Solve for x
    x = 86,724,801.71/7,959.38
  6. Step 6: Final answer
    x = 10,895.93

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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.