Home / 3,412.40-5,113.20-2,256.80

Finding the Fourth Proportional to 3,412.40, 5,113.20 and 2,256.80

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Solution

The fourth proportional to 3,412.40, 5,113.20 and 2,256.80 is: 3,381.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.40 : 5,113.20 = 2,256.80 : x
  2. Step 2: Convert to fraction form
    3,412.40/5,113.20 = 2,256.80/x
  3. Step 3: Cross multiply
    3,412.40x = 5,113.20 × 2,256.80
  4. Step 4: Simplify right side
    3,412.40x = 11,539,469.76
  5. Step 5: Solve for x
    x = 11,539,469.76/3,412.40
  6. Step 6: Final answer
    x = 3,381.63

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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.