Home / 3,955.25-5,458.20-2,186.77

Finding the Fourth Proportional to 3,955.25, 5,458.20 and 2,186.77

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Solution

The fourth proportional to 3,955.25, 5,458.20 and 2,186.77 is: 3,017.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.25 : 5,458.20 = 2,186.77 : x
  2. Step 2: Convert to fraction form
    3,955.25/5,458.20 = 2,186.77/x
  3. Step 3: Cross multiply
    3,955.25x = 5,458.20 × 2,186.77
  4. Step 4: Simplify right side
    3,955.25x = 11,935,828.01
  5. Step 5: Solve for x
    x = 11,935,828.01/3,955.25
  6. Step 6: Final answer
    x = 3,017.72

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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.