Home / 2,787.29-4,180.82-839.44

Finding the Fourth Proportional to 2,787.29, 4,180.82 and 839.44

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Solution

The fourth proportional to 2,787.29, 4,180.82 and 839.44 is: 1,259.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.29 : 4,180.82 = 839.44 : x
  2. Step 2: Convert to fraction form
    2,787.29/4,180.82 = 839.44/x
  3. Step 3: Cross multiply
    2,787.29x = 4,180.82 × 839.44
  4. Step 4: Simplify right side
    2,787.29x = 3,509,539.19
  5. Step 5: Solve for x
    x = 3,509,539.19/2,787.29
  6. Step 6: Final answer
    x = 1,259.12

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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.