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Finding the Fourth Proportional to 8,673.12, 13,006.88 and 2,828.32

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Solution

The fourth proportional to 8,673.12, 13,006.88 and 2,828.32 is: 4,241.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.12 : 13,006.88 = 2,828.32 : x
  2. Step 2: Convert to fraction form
    8,673.12/13,006.88 = 2,828.32/x
  3. Step 3: Cross multiply
    8,673.12x = 13,006.88 × 2,828.32
  4. Step 4: Simplify right side
    8,673.12x = 36,787,618.84
  5. Step 5: Solve for x
    x = 36,787,618.84/8,673.12
  6. Step 6: Final answer
    x = 4,241.57

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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.