Home / 3,883.65-5,359.26-2,115.15

Finding the Fourth Proportional to 3,883.65, 5,359.26 and 2,115.15

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Solution

The fourth proportional to 3,883.65, 5,359.26 and 2,115.15 is: 2,918.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,883.65 : 5,359.26 = 2,115.15 : x
  2. Step 2: Convert to fraction form
    3,883.65/5,359.26 = 2,115.15/x
  3. Step 3: Cross multiply
    3,883.65x = 5,359.26 × 2,115.15
  4. Step 4: Simplify right side
    3,883.65x = 11,335,638.79
  5. Step 5: Solve for x
    x = 11,335,638.79/3,883.65
  6. Step 6: Final answer
    x = 2,918.81

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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.