Home / 3,076.08-4,243.72-2,145.12

Finding the Fourth Proportional to 3,076.08, 4,243.72 and 2,145.12

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Solution

The fourth proportional to 3,076.08, 4,243.72 and 2,145.12 is: 2,959.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.08 : 4,243.72 = 2,145.12 : x
  2. Step 2: Convert to fraction form
    3,076.08/4,243.72 = 2,145.12/x
  3. Step 3: Cross multiply
    3,076.08x = 4,243.72 × 2,145.12
  4. Step 4: Simplify right side
    3,076.08x = 9,103,288.65
  5. Step 5: Solve for x
    x = 9,103,288.65/3,076.08
  6. Step 6: Final answer
    x = 2,959.38

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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.