Home / 2,673.29-3,690.86-1,729.55

Finding the Fourth Proportional to 2,673.29, 3,690.86 and 1,729.55

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Solution

The fourth proportional to 2,673.29, 3,690.86 and 1,729.55 is: 2,387.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,673.29 : 3,690.86 = 1,729.55 : x
  2. Step 2: Convert to fraction form
    2,673.29/3,690.86 = 1,729.55/x
  3. Step 3: Cross multiply
    2,673.29x = 3,690.86 × 1,729.55
  4. Step 4: Simplify right side
    2,673.29x = 6,383,499.81
  5. Step 5: Solve for x
    x = 6,383,499.81/2,673.29
  6. Step 6: Final answer
    x = 2,387.89

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1.5x scale

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.