Home / 3,619.81-5,421.61-3,447.69

Finding the Fourth Proportional to 3,619.81, 5,421.61 and 3,447.69

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Solution

The fourth proportional to 3,619.81, 5,421.61 and 3,447.69 is: 5,163.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.81 : 5,421.61 = 3,447.69 : x
  2. Step 2: Convert to fraction form
    3,619.81/5,421.61 = 3,447.69/x
  3. Step 3: Cross multiply
    3,619.81x = 5,421.61 × 3,447.69
  4. Step 4: Simplify right side
    3,619.81x = 18,692,030.58
  5. Step 5: Solve for x
    x = 18,692,030.58/3,619.81
  6. Step 6: Final answer
    x = 5,163.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.