Home / 2,839.64-3,918.78-1,580.66

Finding the Fourth Proportional to 2,839.64, 3,918.78 and 1,580.66

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Solution

The fourth proportional to 2,839.64, 3,918.78 and 1,580.66 is: 2,181.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.64 : 3,918.78 = 1,580.66 : x
  2. Step 2: Convert to fraction form
    2,839.64/3,918.78 = 1,580.66/x
  3. Step 3: Cross multiply
    2,839.64x = 3,918.78 × 1,580.66
  4. Step 4: Simplify right side
    2,839.64x = 6,194,258.79
  5. Step 5: Solve for x
    x = 6,194,258.79/2,839.64
  6. Step 6: Final answer
    x = 2,181.35

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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.