Home / 3,556.78-5,355.98-2,638.87

Finding the Fourth Proportional to 3,556.78, 5,355.98 and 2,638.87

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Solution

The fourth proportional to 3,556.78, 5,355.98 and 2,638.87 is: 3,973.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.78 : 5,355.98 = 2,638.87 : x
  2. Step 2: Convert to fraction form
    3,556.78/5,355.98 = 2,638.87/x
  3. Step 3: Cross multiply
    3,556.78x = 5,355.98 × 2,638.87
  4. Step 4: Simplify right side
    3,556.78x = 14,133,734.94
  5. Step 5: Solve for x
    x = 14,133,734.94/3,556.78
  6. Step 6: Final answer
    x = 3,973.74

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.