Home / 8,140.21-12,201.99-4,622.79

Finding the Fourth Proportional to 8,140.21, 12,201.99 and 4,622.79

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Solution

The fourth proportional to 8,140.21, 12,201.99 and 4,622.79 is: 6,929.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.21 : 12,201.99 = 4,622.79 : x
  2. Step 2: Convert to fraction form
    8,140.21/12,201.99 = 4,622.79/x
  3. Step 3: Cross multiply
    8,140.21x = 12,201.99 × 4,622.79
  4. Step 4: Simplify right side
    8,140.21x = 56,407,237.35
  5. Step 5: Solve for x
    x = 56,407,237.35/8,140.21
  6. Step 6: Final answer
    x = 6,929.46

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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.