Home / 3,939.30-5,437.35-2,760.66

Finding the Fourth Proportional to 3,939.30, 5,437.35 and 2,760.66

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Solution

The fourth proportional to 3,939.30, 5,437.35 and 2,760.66 is: 3,810.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.30 : 5,437.35 = 2,760.66 : x
  2. Step 2: Convert to fraction form
    3,939.30/5,437.35 = 2,760.66/x
  3. Step 3: Cross multiply
    3,939.30x = 5,437.35 × 2,760.66
  4. Step 4: Simplify right side
    3,939.30x = 15,010,674.65
  5. Step 5: Solve for x
    x = 15,010,674.65/3,939.30
  6. Step 6: Final answer
    x = 3,810.49

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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.