Home / 3,955.25-5,457.78-2,186.55

Finding the Fourth Proportional to 3,955.25, 5,457.78 and 2,186.55

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Solution

The fourth proportional to 3,955.25, 5,457.78 and 2,186.55 is: 3,017.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.25 : 5,457.78 = 2,186.55 : x
  2. Step 2: Convert to fraction form
    3,955.25/5,457.78 = 2,186.55/x
  3. Step 3: Cross multiply
    3,955.25x = 5,457.78 × 2,186.55
  4. Step 4: Simplify right side
    3,955.25x = 11,933,708.86
  5. Step 5: Solve for x
    x = 11,933,708.86/3,955.25
  6. Step 6: Final answer
    x = 3,017.18

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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.