Home / 7,102.21-9,800.66-3,914.87

Finding the Fourth Proportional to 7,102.21, 9,800.66 and 3,914.87

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Solution

The fourth proportional to 7,102.21, 9,800.66 and 3,914.87 is: 5,402.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,102.21 : 9,800.66 = 3,914.87 : x
  2. Step 2: Convert to fraction form
    7,102.21/9,800.66 = 3,914.87/x
  3. Step 3: Cross multiply
    7,102.21x = 9,800.66 × 3,914.87
  4. Step 4: Simplify right side
    7,102.21x = 38,368,295.43
  5. Step 5: Solve for x
    x = 38,368,295.43/7,102.21
  6. Step 6: Final answer
    x = 5,402.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.