Home / 3,401.38-4,693.89-1,909.30

Finding the Fourth Proportional to 3,401.38, 4,693.89 and 1,909.30

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Solution

The fourth proportional to 3,401.38, 4,693.89 and 1,909.30 is: 2,634.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,401.38 : 4,693.89 = 1,909.30 : x
  2. Step 2: Convert to fraction form
    3,401.38/4,693.89 = 1,909.30/x
  3. Step 3: Cross multiply
    3,401.38x = 4,693.89 × 1,909.30
  4. Step 4: Simplify right side
    3,401.38x = 8,962,044.18
  5. Step 5: Solve for x
    x = 8,962,044.18/3,401.38
  6. Step 6: Final answer
    x = 2,634.83

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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.