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Finding the Fourth Proportional to 6,803.85, 9,390.28 and 3,819.88

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Solution

The fourth proportional to 6,803.85, 9,390.28 and 3,819.88 is: 5,271.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,803.85 : 9,390.28 = 3,819.88 : x
  2. Step 2: Convert to fraction form
    6,803.85/9,390.28 = 3,819.88/x
  3. Step 3: Cross multiply
    6,803.85x = 9,390.28 × 3,819.88
  4. Step 4: Simplify right side
    6,803.85x = 35,869,778.53
  5. Step 5: Solve for x
    x = 35,869,778.53/6,803.85
  6. Step 6: Final answer
    x = 5,271.98

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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.