Home / 2,839.65-3,918.63-1,580.64

Finding the Fourth Proportional to 2,839.65, 3,918.63 and 1,580.64

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Solution

The fourth proportional to 2,839.65, 3,918.63 and 1,580.64 is: 2,181.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.65 : 3,918.63 = 1,580.64 : x
  2. Step 2: Convert to fraction form
    2,839.65/3,918.63 = 1,580.64/x
  3. Step 3: Cross multiply
    2,839.65x = 3,918.63 × 1,580.64
  4. Step 4: Simplify right side
    2,839.65x = 6,193,943.32
  5. Step 5: Solve for x
    x = 6,193,943.32/2,839.65
  6. Step 6: Final answer
    x = 2,181.23

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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.