Home / 3,955.95-5,459.27-2,187.56

Finding the Fourth Proportional to 3,955.95, 5,459.27 and 2,187.56

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Solution

The fourth proportional to 3,955.95, 5,459.27 and 2,187.56 is: 3,018.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.95 : 5,459.27 = 2,187.56 : x
  2. Step 2: Convert to fraction form
    3,955.95/5,459.27 = 2,187.56/x
  3. Step 3: Cross multiply
    3,955.95x = 5,459.27 × 2,187.56
  4. Step 4: Simplify right side
    3,955.95x = 11,942,480.68
  5. Step 5: Solve for x
    x = 11,942,480.68/3,955.95
  6. Step 6: Final answer
    x = 3,018.87

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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.