Home / 8,649.21-12,973.83-2,806.28

Finding the Fourth Proportional to 8,649.21, 12,973.83 and 2,806.28

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Solution

The fourth proportional to 8,649.21, 12,973.83 and 2,806.28 is: 4,209.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.21 : 12,973.83 = 2,806.28 : x
  2. Step 2: Convert to fraction form
    8,649.21/12,973.83 = 2,806.28/x
  3. Step 3: Cross multiply
    8,649.21x = 12,973.83 × 2,806.28
  4. Step 4: Simplify right side
    8,649.21x = 36,408,120.75
  5. Step 5: Solve for x
    x = 36,408,120.75/8,649.21
  6. Step 6: Final answer
    x = 4,209.42

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Similar ratio
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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.