Home / 10,122.80-15,185.79-2,727.55

Finding the Fourth Proportional to 10,122.80, 15,185.79 and 2,727.55

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Solution

The fourth proportional to 10,122.80, 15,185.79 and 2,727.55 is: 4,091.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.80 : 15,185.79 = 2,727.55 : x
  2. Step 2: Convert to fraction form
    10,122.80/15,185.79 = 2,727.55/x
  3. Step 3: Cross multiply
    10,122.80x = 15,185.79 × 2,727.55
  4. Step 4: Simplify right side
    10,122.80x = 41,420,001.51
  5. Step 5: Solve for x
    x = 41,420,001.51/10,122.80
  6. Step 6: Final answer
    x = 4,091.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.