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Finding the Fourth Proportional to 8,391.89, 11,579.51 and 4,854.41

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Solution

The fourth proportional to 8,391.89, 11,579.51 and 4,854.41 is: 6,698.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.89 : 11,579.51 = 4,854.41 : x
  2. Step 2: Convert to fraction form
    8,391.89/11,579.51 = 4,854.41/x
  3. Step 3: Cross multiply
    8,391.89x = 11,579.51 × 4,854.41
  4. Step 4: Simplify right side
    8,391.89x = 56,211,664.87
  5. Step 5: Solve for x
    x = 56,211,664.87/8,391.89
  6. Step 6: Final answer
    x = 6,698.34

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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.