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Finding the Fourth Proportional to 8,939.94, 12,309.06 and 7,592.79

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Solution

The fourth proportional to 8,939.94, 12,309.06 and 7,592.79 is: 10,454.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.94 : 12,309.06 = 7,592.79 : x
  2. Step 2: Convert to fraction form
    8,939.94/12,309.06 = 7,592.79/x
  3. Step 3: Cross multiply
    8,939.94x = 12,309.06 × 7,592.79
  4. Step 4: Simplify right side
    8,939.94x = 93,460,107.68
  5. Step 5: Solve for x
    x = 93,460,107.68/8,939.94
  6. Step 6: Final answer
    x = 10,454.22

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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.