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Finding the Fourth Proportional to 2,539.91, 3,809.99 and 808.67

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Solution

The fourth proportional to 2,539.91, 3,809.99 and 808.67 is: 1,213.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.91 : 3,809.99 = 808.67 : x
  2. Step 2: Convert to fraction form
    2,539.91/3,809.99 = 808.67/x
  3. Step 3: Cross multiply
    2,539.91x = 3,809.99 × 808.67
  4. Step 4: Simplify right side
    2,539.91x = 3,081,001.52
  5. Step 5: Solve for x
    x = 3,081,001.52/2,539.91
  6. Step 6: Final answer
    x = 1,213.04

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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.