Home / 1,725.20-2,379.56-1,668.06

Finding the Fourth Proportional to 1,725.20, 2,379.56 and 1,668.06

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Solution

The fourth proportional to 1,725.20, 2,379.56 and 1,668.06 is: 2,300.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.20 : 2,379.56 = 1,668.06 : x
  2. Step 2: Convert to fraction form
    1,725.20/2,379.56 = 1,668.06/x
  3. Step 3: Cross multiply
    1,725.20x = 2,379.56 × 1,668.06
  4. Step 4: Simplify right side
    1,725.20x = 3,969,248.85
  5. Step 5: Solve for x
    x = 3,969,248.85/1,725.20
  6. Step 6: Final answer
    x = 2,300.75

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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.