Home / 2,782.30-4,173.45-808.05

Finding the Fourth Proportional to 2,782.30, 4,173.45 and 808.05

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Solution

The fourth proportional to 2,782.30, 4,173.45 and 808.05 is: 1,212.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.30 : 4,173.45 = 808.05 : x
  2. Step 2: Convert to fraction form
    2,782.30/4,173.45 = 808.05/x
  3. Step 3: Cross multiply
    2,782.30x = 4,173.45 × 808.05
  4. Step 4: Simplify right side
    2,782.30x = 3,372,356.27
  5. Step 5: Solve for x
    x = 3,372,356.27/2,782.30
  6. Step 6: Final answer
    x = 1,212.08

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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.