Home / 3,421.89-5,137.08-3,406.09

Finding the Fourth Proportional to 3,421.89, 5,137.08 and 3,406.09

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Solution

The fourth proportional to 3,421.89, 5,137.08 and 3,406.09 is: 5,113.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.89 : 5,137.08 = 3,406.09 : x
  2. Step 2: Convert to fraction form
    3,421.89/5,137.08 = 3,406.09/x
  3. Step 3: Cross multiply
    3,421.89x = 5,137.08 × 3,406.09
  4. Step 4: Simplify right side
    3,421.89x = 17,497,356.82
  5. Step 5: Solve for x
    x = 17,497,356.82/3,421.89
  6. Step 6: Final answer
    x = 5,113.36

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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.