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Finding the Fourth Proportional to 6,682.80, 10,011.90 and 3,910.80

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Solution

The fourth proportional to 6,682.80, 10,011.90 and 3,910.80 is: 5,859.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,682.80 : 10,011.90 = 3,910.80 : x
  2. Step 2: Convert to fraction form
    6,682.80/10,011.90 = 3,910.80/x
  3. Step 3: Cross multiply
    6,682.80x = 10,011.90 × 3,910.80
  4. Step 4: Simplify right side
    6,682.80x = 39,154,538.52
  5. Step 5: Solve for x
    x = 39,154,538.52/6,682.80
  6. Step 6: Final answer
    x = 5,859.00

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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.