Home / 6,942.49-10,400.66-3,428.39

Finding the Fourth Proportional to 6,942.49, 10,400.66 and 3,428.39

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Solution

The fourth proportional to 6,942.49, 10,400.66 and 3,428.39 is: 5,136.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,942.49 : 10,400.66 = 3,428.39 : x
  2. Step 2: Convert to fraction form
    6,942.49/10,400.66 = 3,428.39/x
  3. Step 3: Cross multiply
    6,942.49x = 10,400.66 × 3,428.39
  4. Step 4: Simplify right side
    6,942.49x = 35,657,462.45
  5. Step 5: Solve for x
    x = 35,657,462.45/6,942.49
  6. Step 6: Final answer
    x = 5,136.12

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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.