Home / 3,727.89-5,144.99-2,405.45

Finding the Fourth Proportional to 3,727.89, 5,144.99 and 2,405.45

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Solution

The fourth proportional to 3,727.89, 5,144.99 and 2,405.45 is: 3,319.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,727.89 : 5,144.99 = 2,405.45 : x
  2. Step 2: Convert to fraction form
    3,727.89/5,144.99 = 2,405.45/x
  3. Step 3: Cross multiply
    3,727.89x = 5,144.99 × 2,405.45
  4. Step 4: Simplify right side
    3,727.89x = 12,375,988.09
  5. Step 5: Solve for x
    x = 12,375,988.09/3,727.89
  6. Step 6: Final answer
    x = 3,319.84

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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.