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Finding the Fourth Proportional to 2,539.50, 3,809.33 and 808.13

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Solution

The fourth proportional to 2,539.50, 3,809.33 and 808.13 is: 1,212.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.50 : 3,809.33 = 808.13 : x
  2. Step 2: Convert to fraction form
    2,539.50/3,809.33 = 808.13/x
  3. Step 3: Cross multiply
    2,539.50x = 3,809.33 × 808.13
  4. Step 4: Simplify right side
    2,539.50x = 3,078,410.77
  5. Step 5: Solve for x
    x = 3,078,410.77/2,539.50
  6. Step 6: Final answer
    x = 1,212.21

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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.