Home / 1,668.46-2,500.32-928.42

Finding the Fourth Proportional to 1,668.46, 2,500.32 and 928.42

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Solution

The fourth proportional to 1,668.46, 2,500.32 and 928.42 is: 1,391.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.46 : 2,500.32 = 928.42 : x
  2. Step 2: Convert to fraction form
    1,668.46/2,500.32 = 928.42/x
  3. Step 3: Cross multiply
    1,668.46x = 2,500.32 × 928.42
  4. Step 4: Simplify right side
    1,668.46x = 2,321,347.09
  5. Step 5: Solve for x
    x = 2,321,347.09/1,668.46
  6. Step 6: Final answer
    x = 1,391.31

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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.