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Finding the Fourth Proportional to 8,879.49, 12,254.36 and 5,744.79

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Solution

The fourth proportional to 8,879.49, 12,254.36 and 5,744.79 is: 7,928.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.49 : 12,254.36 = 5,744.79 : x
  2. Step 2: Convert to fraction form
    8,879.49/12,254.36 = 5,744.79/x
  3. Step 3: Cross multiply
    8,879.49x = 12,254.36 × 5,744.79
  4. Step 4: Simplify right side
    8,879.49x = 70,398,696.06
  5. Step 5: Solve for x
    x = 70,398,696.06/8,879.49
  6. Step 6: Final answer
    x = 7,928.24

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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.