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Finding the Fourth Proportional to 6,425.82, 9,638.72 and 1,808.82

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Solution

The fourth proportional to 6,425.82, 9,638.72 and 1,808.82 is: 2,713.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,425.82 : 9,638.72 = 1,808.82 : x
  2. Step 2: Convert to fraction form
    6,425.82/9,638.72 = 1,808.82/x
  3. Step 3: Cross multiply
    6,425.82x = 9,638.72 × 1,808.82
  4. Step 4: Simplify right side
    6,425.82x = 17,434,700.47
  5. Step 5: Solve for x
    x = 17,434,700.47/6,425.82
  6. Step 6: Final answer
    x = 2,713.23

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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.