Home / 4,138.40-5,711.20-2,460.80

Finding the Fourth Proportional to 4,138.40, 5,711.20 and 2,460.80

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Solution

The fourth proportional to 4,138.40, 5,711.20 and 2,460.80 is: 3,396.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.40 : 5,711.20 = 2,460.80 : x
  2. Step 2: Convert to fraction form
    4,138.40/5,711.20 = 2,460.80/x
  3. Step 3: Cross multiply
    4,138.40x = 5,711.20 × 2,460.80
  4. Step 4: Simplify right side
    4,138.40x = 14,054,120.96
  5. Step 5: Solve for x
    x = 14,054,120.96/4,138.40
  6. Step 6: Final answer
    x = 3,396.03

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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.