Home / 3,905.94-5,390.47-2,577.34

Finding the Fourth Proportional to 3,905.94, 5,390.47 and 2,577.34

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Solution

The fourth proportional to 3,905.94, 5,390.47 and 2,577.34 is: 3,556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.94 : 5,390.47 = 2,577.34 : x
  2. Step 2: Convert to fraction form
    3,905.94/5,390.47 = 2,577.34/x
  3. Step 3: Cross multiply
    3,905.94x = 5,390.47 × 2,577.34
  4. Step 4: Simplify right side
    3,905.94x = 13,893,034.11
  5. Step 5: Solve for x
    x = 13,893,034.11/3,905.94
  6. Step 6: Final answer
    x = 3,556.90

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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.