Home / 2,839.66-3,918.69-1,580.69

Finding the Fourth Proportional to 2,839.66, 3,918.69 and 1,580.69

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Solution

The fourth proportional to 2,839.66, 3,918.69 and 1,580.69 is: 2,181.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.66 : 3,918.69 = 1,580.69 : x
  2. Step 2: Convert to fraction form
    2,839.66/3,918.69 = 1,580.69/x
  3. Step 3: Cross multiply
    2,839.66x = 3,918.69 × 1,580.69
  4. Step 4: Simplify right side
    2,839.66x = 6,194,234.10
  5. Step 5: Solve for x
    x = 6,194,234.10/2,839.66
  6. Step 6: Final answer
    x = 2,181.33

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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.