Home / 2,839.70-4,257.80-1,195.40

Finding the Fourth Proportional to 2,839.70, 4,257.80 and 1,195.40

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Solution

The fourth proportional to 2,839.70, 4,257.80 and 1,195.40 is: 1,792.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.70 : 4,257.80 = 1,195.40 : x
  2. Step 2: Convert to fraction form
    2,839.70/4,257.80 = 1,195.40/x
  3. Step 3: Cross multiply
    2,839.70x = 4,257.80 × 1,195.40
  4. Step 4: Simplify right side
    2,839.70x = 5,089,774.12
  5. Step 5: Solve for x
    x = 5,089,774.12/2,839.70
  6. Step 6: Final answer
    x = 1,792.36

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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.