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Finding the Fourth Proportional to 8,390.94, 11,579.56 and 5,033.90

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Solution

The fourth proportional to 8,390.94, 11,579.56 and 5,033.90 is: 6,946.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.94 : 11,579.56 = 5,033.90 : x
  2. Step 2: Convert to fraction form
    8,390.94/11,579.56 = 5,033.90/x
  3. Step 3: Cross multiply
    8,390.94x = 11,579.56 × 5,033.90
  4. Step 4: Simplify right side
    8,390.94x = 58,290,298.31
  5. Step 5: Solve for x
    x = 58,290,298.31/8,390.94
  6. Step 6: Final answer
    x = 6,946.81

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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.