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Finding the Fourth Proportional to 8,853.69, 13,279.02 and 2,928.75

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Solution

The fourth proportional to 8,853.69, 13,279.02 and 2,928.75 is: 4,392.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,853.69 : 13,279.02 = 2,928.75 : x
  2. Step 2: Convert to fraction form
    8,853.69/13,279.02 = 2,928.75/x
  3. Step 3: Cross multiply
    8,853.69x = 13,279.02 × 2,928.75
  4. Step 4: Simplify right side
    8,853.69x = 38,890,929.83
  5. Step 5: Solve for x
    x = 38,890,929.83/8,853.69
  6. Step 6: Final answer
    x = 4,392.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.