Home / 3,401.16-4,693.70-1,909.20

Finding the Fourth Proportional to 3,401.16, 4,693.70 and 1,909.20

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Solution

The fourth proportional to 3,401.16, 4,693.70 and 1,909.20 is: 2,634.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,401.16 : 4,693.70 = 1,909.20 : x
  2. Step 2: Convert to fraction form
    3,401.16/4,693.70 = 1,909.20/x
  3. Step 3: Cross multiply
    3,401.16x = 4,693.70 × 1,909.20
  4. Step 4: Simplify right side
    3,401.16x = 8,961,202.49
  5. Step 5: Solve for x
    x = 8,961,202.49/3,401.16
  6. Step 6: Final answer
    x = 2,634.75

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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.