Home / 3,955.15-5,458.38-2,186.72

Finding the Fourth Proportional to 3,955.15, 5,458.38 and 2,186.72

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Solution

The fourth proportional to 3,955.15, 5,458.38 and 2,186.72 is: 3,017.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.15 : 5,458.38 = 2,186.72 : x
  2. Step 2: Convert to fraction form
    3,955.15/5,458.38 = 2,186.72/x
  3. Step 3: Cross multiply
    3,955.15x = 5,458.38 × 2,186.72
  4. Step 4: Simplify right side
    3,955.15x = 11,935,948.71
  5. Step 5: Solve for x
    x = 11,935,948.71/3,955.15
  6. Step 6: Final answer
    x = 3,017.82

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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.