Home / 3,540.78-5,303.87-2,076.40

Finding the Fourth Proportional to 3,540.78, 5,303.87 and 2,076.40

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Solution

The fourth proportional to 3,540.78, 5,303.87 and 2,076.40 is: 3,110.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.78 : 5,303.87 = 2,076.40 : x
  2. Step 2: Convert to fraction form
    3,540.78/5,303.87 = 2,076.40/x
  3. Step 3: Cross multiply
    3,540.78x = 5,303.87 × 2,076.40
  4. Step 4: Simplify right side
    3,540.78x = 11,012,971.38
  5. Step 5: Solve for x
    x = 11,012,971.38/3,540.78
  6. Step 6: Final answer
    x = 3,110.32

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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.