Home / 5,138.41-7,705.80-1,850.62

Finding the Fourth Proportional to 5,138.41, 7,705.80 and 1,850.62

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Solution

The fourth proportional to 5,138.41, 7,705.80 and 1,850.62 is: 2,775.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.41 : 7,705.80 = 1,850.62 : x
  2. Step 2: Convert to fraction form
    5,138.41/7,705.80 = 1,850.62/x
  3. Step 3: Cross multiply
    5,138.41x = 7,705.80 × 1,850.62
  4. Step 4: Simplify right side
    5,138.41x = 14,260,507.60
  5. Step 5: Solve for x
    x = 14,260,507.60/5,138.41
  6. Step 6: Final answer
    x = 2,775.28

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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.