Home / 3,955.11-5,458.05-2,186.70

Finding the Fourth Proportional to 3,955.11, 5,458.05 and 2,186.70

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Solution

The fourth proportional to 3,955.11, 5,458.05 and 2,186.70 is: 3,017.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.11 : 5,458.05 = 2,186.70 : x
  2. Step 2: Convert to fraction form
    3,955.11/5,458.05 = 2,186.70/x
  3. Step 3: Cross multiply
    3,955.11x = 5,458.05 × 2,186.70
  4. Step 4: Simplify right side
    3,955.11x = 11,935,117.94
  5. Step 5: Solve for x
    x = 11,935,117.94/3,955.11
  6. Step 6: Final answer
    x = 3,017.65

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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.