Home / 3,494.40-5,245.65-2,109.30

Finding the Fourth Proportional to 3,494.40, 5,245.65 and 2,109.30

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Solution

The fourth proportional to 3,494.40, 5,245.65 and 2,109.30 is: 3,166.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,494.40 : 5,245.65 = 2,109.30 : x
  2. Step 2: Convert to fraction form
    3,494.40/5,245.65 = 2,109.30/x
  3. Step 3: Cross multiply
    3,494.40x = 5,245.65 × 2,109.30
  4. Step 4: Simplify right side
    3,494.40x = 11,064,649.55
  5. Step 5: Solve for x
    x = 11,064,649.55/3,494.40
  6. Step 6: Final answer
    x = 3,166.39

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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.