Home / 1,942.93-2,680.32-1,313.68

Finding the Fourth Proportional to 1,942.93, 2,680.32 and 1,313.68

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Solution

The fourth proportional to 1,942.93, 2,680.32 and 1,313.68 is: 1,812.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.93 : 2,680.32 = 1,313.68 : x
  2. Step 2: Convert to fraction form
    1,942.93/2,680.32 = 1,313.68/x
  3. Step 3: Cross multiply
    1,942.93x = 2,680.32 × 1,313.68
  4. Step 4: Simplify right side
    1,942.93x = 3,521,069.38
  5. Step 5: Solve for x
    x = 3,521,069.38/1,942.93
  6. Step 6: Final answer
    x = 1,812.25

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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.