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Finding the Fourth Proportional to 8,898.41, 12,279.32 and 4,919.29

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Solution

The fourth proportional to 8,898.41, 12,279.32 and 4,919.29 is: 6,788.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.41 : 12,279.32 = 4,919.29 : x
  2. Step 2: Convert to fraction form
    8,898.41/12,279.32 = 4,919.29/x
  3. Step 3: Cross multiply
    8,898.41x = 12,279.32 × 4,919.29
  4. Step 4: Simplify right side
    8,898.41x = 60,405,450.09
  5. Step 5: Solve for x
    x = 60,405,450.09/8,898.41
  6. Step 6: Final answer
    x = 6,788.34

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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.