Home / 2,310.80-3,188.97-1,427.09

Finding the Fourth Proportional to 2,310.80, 3,188.97 and 1,427.09

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Solution

The fourth proportional to 2,310.80, 3,188.97 and 1,427.09 is: 1,969.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.80 : 3,188.97 = 1,427.09 : x
  2. Step 2: Convert to fraction form
    2,310.80/3,188.97 = 1,427.09/x
  3. Step 3: Cross multiply
    2,310.80x = 3,188.97 × 1,427.09
  4. Step 4: Simplify right side
    2,310.80x = 4,550,931.25
  5. Step 5: Solve for x
    x = 4,550,931.25/2,310.80
  6. Step 6: Final answer
    x = 1,969.42

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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.