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Finding the Fourth Proportional to 6,808.20, 9,393.90 and 4,012.20

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Solution

The fourth proportional to 6,808.20, 9,393.90 and 4,012.20 is: 5,536.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,808.20 : 9,393.90 = 4,012.20 : x
  2. Step 2: Convert to fraction form
    6,808.20/9,393.90 = 4,012.20/x
  3. Step 3: Cross multiply
    6,808.20x = 9,393.90 × 4,012.20
  4. Step 4: Simplify right side
    6,808.20x = 37,690,205.58
  5. Step 5: Solve for x
    x = 37,690,205.58/6,808.20
  6. Step 6: Final answer
    x = 5,536.00

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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.