Home / 2,787.26-4,181.25-839.66

Finding the Fourth Proportional to 2,787.26, 4,181.25 and 839.66

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Solution

The fourth proportional to 2,787.26, 4,181.25 and 839.66 is: 1,259.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.26 : 4,181.25 = 839.66 : x
  2. Step 2: Convert to fraction form
    2,787.26/4,181.25 = 839.66/x
  3. Step 3: Cross multiply
    2,787.26x = 4,181.25 × 839.66
  4. Step 4: Simplify right side
    2,787.26x = 3,510,828.38
  5. Step 5: Solve for x
    x = 3,510,828.38/2,787.26
  6. Step 6: Final answer
    x = 1,259.60

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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.