Home / 2,839.92-3,918.96-1,580.88

Finding the Fourth Proportional to 2,839.92, 3,918.96 and 1,580.88

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Solution

The fourth proportional to 2,839.92, 3,918.96 and 1,580.88 is: 2,181.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.92 : 3,918.96 = 1,580.88 : x
  2. Step 2: Convert to fraction form
    2,839.92/3,918.96 = 1,580.88/x
  3. Step 3: Cross multiply
    2,839.92x = 3,918.96 × 1,580.88
  4. Step 4: Simplify right side
    2,839.92x = 6,195,405.48
  5. Step 5: Solve for x
    x = 6,195,405.48/2,839.92
  6. Step 6: Final answer
    x = 2,181.54

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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.