Home / 2,134.87-2,942.90-1,668.31

Finding the Fourth Proportional to 2,134.87, 2,942.90 and 1,668.31

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Solution

The fourth proportional to 2,134.87, 2,942.90 and 1,668.31 is: 2,299.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,134.87 : 2,942.90 = 1,668.31 : x
  2. Step 2: Convert to fraction form
    2,134.87/2,942.90 = 1,668.31/x
  3. Step 3: Cross multiply
    2,134.87x = 2,942.90 × 1,668.31
  4. Step 4: Simplify right side
    2,134.87x = 4,909,661.16
  5. Step 5: Solve for x
    x = 4,909,661.16/2,134.87
  6. Step 6: Final answer
    x = 2,299.75

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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.