Home / 3,431.90-4,735.98-1,939.82

Finding the Fourth Proportional to 3,431.90, 4,735.98 and 1,939.82

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Solution

The fourth proportional to 3,431.90, 4,735.98 and 1,939.82 is: 2,676.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.90 : 4,735.98 = 1,939.82 : x
  2. Step 2: Convert to fraction form
    3,431.90/4,735.98 = 1,939.82/x
  3. Step 3: Cross multiply
    3,431.90x = 4,735.98 × 1,939.82
  4. Step 4: Simplify right side
    3,431.90x = 9,186,925.04
  5. Step 5: Solve for x
    x = 9,186,925.04/3,431.90
  6. Step 6: Final answer
    x = 2,676.92

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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.