Home / 3,421.32-4,721.31-2,163.05

Finding the Fourth Proportional to 3,421.32, 4,721.31 and 2,163.05

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Solution

The fourth proportional to 3,421.32, 4,721.31 and 2,163.05 is: 2,984.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.32 : 4,721.31 = 2,163.05 : x
  2. Step 2: Convert to fraction form
    3,421.32/4,721.31 = 2,163.05/x
  3. Step 3: Cross multiply
    3,421.32x = 4,721.31 × 2,163.05
  4. Step 4: Simplify right side
    3,421.32x = 10,212,429.60
  5. Step 5: Solve for x
    x = 10,212,429.60/3,421.32
  6. Step 6: Final answer
    x = 2,984.94

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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.