Home / 2,725.28-4,084.78-1,261.36

Finding the Fourth Proportional to 2,725.28, 4,084.78 and 1,261.36

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Solution

The fourth proportional to 2,725.28, 4,084.78 and 1,261.36 is: 1,890.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,725.28 : 4,084.78 = 1,261.36 : x
  2. Step 2: Convert to fraction form
    2,725.28/4,084.78 = 1,261.36/x
  3. Step 3: Cross multiply
    2,725.28x = 4,084.78 × 1,261.36
  4. Step 4: Simplify right side
    2,725.28x = 5,152,378.10
  5. Step 5: Solve for x
    x = 5,152,378.10/2,725.28
  6. Step 6: Final answer
    x = 1,890.59

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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.