Home / 3,401.85-4,694.55-1,985.43

Finding the Fourth Proportional to 3,401.85, 4,694.55 and 1,985.43

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Solution

The fourth proportional to 3,401.85, 4,694.55 and 1,985.43 is: 2,739.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,401.85 : 4,694.55 = 1,985.43 : x
  2. Step 2: Convert to fraction form
    3,401.85/4,694.55 = 1,985.43/x
  3. Step 3: Cross multiply
    3,401.85x = 4,694.55 × 1,985.43
  4. Step 4: Simplify right side
    3,401.85x = 9,320,700.41
  5. Step 5: Solve for x
    x = 9,320,700.41/3,401.85
  6. Step 6: Final answer
    x = 2,739.89

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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.