Home / 3,431.59-4,735.61-1,939.65

Finding the Fourth Proportional to 3,431.59, 4,735.61 and 1,939.65

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Solution

The fourth proportional to 3,431.59, 4,735.61 and 1,939.65 is: 2,676.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.59 : 4,735.61 = 1,939.65 : x
  2. Step 2: Convert to fraction form
    3,431.59/4,735.61 = 1,939.65/x
  3. Step 3: Cross multiply
    3,431.59x = 4,735.61 × 1,939.65
  4. Step 4: Simplify right side
    3,431.59x = 9,185,416.66
  5. Step 5: Solve for x
    x = 9,185,416.66/3,431.59
  6. Step 6: Final answer
    x = 2,676.72

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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.