Home / 6,486.21-9,729.92-2,102.49

Finding the Fourth Proportional to 6,486.21, 9,729.92 and 2,102.49

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Solution

The fourth proportional to 6,486.21, 9,729.92 and 2,102.49 is: 3,153.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,486.21 : 9,729.92 = 2,102.49 : x
  2. Step 2: Convert to fraction form
    6,486.21/9,729.92 = 2,102.49/x
  3. Step 3: Cross multiply
    6,486.21x = 9,729.92 × 2,102.49
  4. Step 4: Simplify right side
    6,486.21x = 20,457,064.76
  5. Step 5: Solve for x
    x = 20,457,064.76/6,486.21
  6. Step 6: Final answer
    x = 3,153.93

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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.