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Finding the Fourth Proportional to 8,898.11, 12,279.65 and 4,919.48

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Solution

The fourth proportional to 8,898.11, 12,279.65 and 4,919.48 is: 6,789.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.11 : 12,279.65 = 4,919.48 : x
  2. Step 2: Convert to fraction form
    8,898.11/12,279.65 = 4,919.48/x
  3. Step 3: Cross multiply
    8,898.11x = 12,279.65 × 4,919.48
  4. Step 4: Simplify right side
    8,898.11x = 60,409,503.33
  5. Step 5: Solve for x
    x = 60,409,503.33/8,898.11
  6. Step 6: Final answer
    x = 6,789.03

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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.