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Finding the Fourth Proportional to 8,412.94, 12,619.44 and 2,866.90

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Solution

The fourth proportional to 8,412.94, 12,619.44 and 2,866.90 is: 4,300.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.94 : 12,619.44 = 2,866.90 : x
  2. Step 2: Convert to fraction form
    8,412.94/12,619.44 = 2,866.90/x
  3. Step 3: Cross multiply
    8,412.94x = 12,619.44 × 2,866.90
  4. Step 4: Simplify right side
    8,412.94x = 36,178,672.54
  5. Step 5: Solve for x
    x = 36,178,672.54/8,412.94
  6. Step 6: Final answer
    x = 4,300.36

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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.