Home / 3,588.12-5,378.94-1,278

Finding the Fourth Proportional to 3,588.12, 5,378.94 and 1,278

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Solution

The fourth proportional to 3,588.12, 5,378.94 and 1,278 is: 1,915.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,588.12 : 5,378.94 = 1,278 : x
  2. Step 2: Convert to fraction form
    3,588.12/5,378.94 = 1,278/x
  3. Step 3: Cross multiply
    3,588.12x = 5,378.94 × 1,278
  4. Step 4: Simplify right side
    3,588.12x = 6,874,285.32
  5. Step 5: Solve for x
    x = 6,874,285.32/3,588.12
  6. Step 6: Final answer
    x = 1,915.85

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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.