Home / 3,100.14-4,650.81-1,368.78

Finding the Fourth Proportional to 3,100.14, 4,650.81 and 1,368.78

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Solution

The fourth proportional to 3,100.14, 4,650.81 and 1,368.78 is: 2,053.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.14 : 4,650.81 = 1,368.78 : x
  2. Step 2: Convert to fraction form
    3,100.14/4,650.81 = 1,368.78/x
  3. Step 3: Cross multiply
    3,100.14x = 4,650.81 × 1,368.78
  4. Step 4: Simplify right side
    3,100.14x = 6,365,935.71
  5. Step 5: Solve for x
    x = 6,365,935.71/3,100.14
  6. Step 6: Final answer
    x = 2,053.43

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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.