Home / 2,839.39-3,918.40-1,580.56

Finding the Fourth Proportional to 2,839.39, 3,918.40 and 1,580.56

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Solution

The fourth proportional to 2,839.39, 3,918.40 and 1,580.56 is: 2,181.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.39 : 3,918.40 = 1,580.56 : x
  2. Step 2: Convert to fraction form
    2,839.39/3,918.40 = 1,580.56/x
  3. Step 3: Cross multiply
    2,839.39x = 3,918.40 × 1,580.56
  4. Step 4: Simplify right side
    2,839.39x = 6,193,252.56
  5. Step 5: Solve for x
    x = 6,193,252.56/2,839.39
  6. Step 6: Final answer
    x = 2,181.19

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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.