Home / 2,310.75-3,188.88-1,379.25

Finding the Fourth Proportional to 2,310.75, 3,188.88 and 1,379.25

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Solution

The fourth proportional to 2,310.75, 3,188.88 and 1,379.25 is: 1,903.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.75 : 3,188.88 = 1,379.25 : x
  2. Step 2: Convert to fraction form
    2,310.75/3,188.88 = 1,379.25/x
  3. Step 3: Cross multiply
    2,310.75x = 3,188.88 × 1,379.25
  4. Step 4: Simplify right side
    2,310.75x = 4,398,262.74
  5. Step 5: Solve for x
    x = 4,398,262.74/2,310.75
  6. Step 6: Final answer
    x = 1,903.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.