Home / 3,931.55-5,425.54-2,163.26

Finding the Fourth Proportional to 3,931.55, 5,425.54 and 2,163.26

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Solution

The fourth proportional to 3,931.55, 5,425.54 and 2,163.26 is: 2,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.55 : 5,425.54 = 2,163.26 : x
  2. Step 2: Convert to fraction form
    3,931.55/5,425.54 = 2,163.26/x
  3. Step 3: Cross multiply
    3,931.55x = 5,425.54 × 2,163.26
  4. Step 4: Simplify right side
    3,931.55x = 11,736,853.66
  5. Step 5: Solve for x
    x = 11,736,853.66/3,931.55
  6. Step 6: Final answer
    x = 2,985.30

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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.