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Finding the Fourth Proportional to 3,207.99, 4,425.78 and 1,881.21

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Solution

The fourth proportional to 3,207.99, 4,425.78 and 1,881.21 is: 2,595.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,207.99 : 4,425.78 = 1,881.21 : x
  2. Step 2: Convert to fraction form
    3,207.99/4,425.78 = 1,881.21/x
  3. Step 3: Cross multiply
    3,207.99x = 4,425.78 × 1,881.21
  4. Step 4: Simplify right side
    3,207.99x = 8,325,828.65
  5. Step 5: Solve for x
    x = 8,325,828.65/3,207.99
  6. Step 6: Final answer
    x = 2,595.34

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Double scale
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Similar ratio
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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.