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Finding the Fourth Proportional to 2,451.49, 3,677.65 and 808.50

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Solution

The fourth proportional to 2,451.49, 3,677.65 and 808.50 is: 1,212.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,451.49 : 3,677.65 = 808.50 : x
  2. Step 2: Convert to fraction form
    2,451.49/3,677.65 = 808.50/x
  3. Step 3: Cross multiply
    2,451.49x = 3,677.65 × 808.50
  4. Step 4: Simplify right side
    2,451.49x = 2,973,380.03
  5. Step 5: Solve for x
    x = 2,973,380.03/2,451.49
  6. Step 6: Final answer
    x = 1,212.89

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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.