Home / 3,955.63-5,458.79-2,163.15

Finding the Fourth Proportional to 3,955.63, 5,458.79 and 2,163.15

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Solution

The fourth proportional to 3,955.63, 5,458.79 and 2,163.15 is: 2,985.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.63 : 5,458.79 = 2,163.15 : x
  2. Step 2: Convert to fraction form
    3,955.63/5,458.79 = 2,163.15/x
  3. Step 3: Cross multiply
    3,955.63x = 5,458.79 × 2,163.15
  4. Step 4: Simplify right side
    3,955.63x = 11,808,181.59
  5. Step 5: Solve for x
    x = 11,808,181.59/3,955.63
  6. Step 6: Final answer
    x = 2,985.16

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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.