Home / 3,878.78-5,352.68-2,200.50

Finding the Fourth Proportional to 3,878.78, 5,352.68 and 2,200.50

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Solution

The fourth proportional to 3,878.78, 5,352.68 and 2,200.50 is: 3,036.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.78 : 5,352.68 = 2,200.50 : x
  2. Step 2: Convert to fraction form
    3,878.78/5,352.68 = 2,200.50/x
  3. Step 3: Cross multiply
    3,878.78x = 5,352.68 × 2,200.50
  4. Step 4: Simplify right side
    3,878.78x = 11,778,572.34
  5. Step 5: Solve for x
    x = 11,778,572.34/3,878.78
  6. Step 6: Final answer
    x = 3,036.67

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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.