Home / 3,421.71-4,721.99-2,163.34

Finding the Fourth Proportional to 3,421.71, 4,721.99 and 2,163.34

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Solution

The fourth proportional to 3,421.71, 4,721.99 and 2,163.34 is: 2,985.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.71 : 4,721.99 = 2,163.34 : x
  2. Step 2: Convert to fraction form
    3,421.71/4,721.99 = 2,163.34/x
  3. Step 3: Cross multiply
    3,421.71x = 4,721.99 × 2,163.34
  4. Step 4: Simplify right side
    3,421.71x = 10,215,235.42
  5. Step 5: Solve for x
    x = 10,215,235.42/3,421.71
  6. Step 6: Final answer
    x = 2,985.42

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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.