Home / 5,138.48-7,705.69-1,850.42

Finding the Fourth Proportional to 5,138.48, 7,705.69 and 1,850.42

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Solution

The fourth proportional to 5,138.48, 7,705.69 and 1,850.42 is: 2,774.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.48 : 7,705.69 = 1,850.42 : x
  2. Step 2: Convert to fraction form
    5,138.48/7,705.69 = 1,850.42/x
  3. Step 3: Cross multiply
    5,138.48x = 7,705.69 × 1,850.42
  4. Step 4: Simplify right side
    5,138.48x = 14,258,762.89
  5. Step 5: Solve for x
    x = 14,258,762.89/5,138.48
  6. Step 6: Final answer
    x = 2,774.90

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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.