Home / 3,401.20-5,101.86-1,320.98

Finding the Fourth Proportional to 3,401.20, 5,101.86 and 1,320.98

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Solution

The fourth proportional to 3,401.20, 5,101.86 and 1,320.98 is: 1,981.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,401.20 : 5,101.86 = 1,320.98 : x
  2. Step 2: Convert to fraction form
    3,401.20/5,101.86 = 1,320.98/x
  3. Step 3: Cross multiply
    3,401.20x = 5,101.86 × 1,320.98
  4. Step 4: Simplify right side
    3,401.20x = 6,739,455.02
  5. Step 5: Solve for x
    x = 6,739,455.02/3,401.20
  6. Step 6: Final answer
    x = 1,981.49

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.