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Finding the Fourth Proportional to 3,300.81, 4,555 and 1,808.79

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Solution

The fourth proportional to 3,300.81, 4,555 and 1,808.79 is: 2,496.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,300.81 : 4,555 = 1,808.79 : x
  2. Step 2: Convert to fraction form
    3,300.81/4,555 = 1,808.79/x
  3. Step 3: Cross multiply
    3,300.81x = 4,555 × 1,808.79
  4. Step 4: Simplify right side
    3,300.81x = 8,239,038.45
  5. Step 5: Solve for x
    x = 8,239,038.45/3,300.81
  6. Step 6: Final answer
    x = 2,496.07

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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.