Home / 3,903.36-5,385.12-2,577.84

Finding the Fourth Proportional to 3,903.36, 5,385.12 and 2,577.84

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Solution

The fourth proportional to 3,903.36, 5,385.12 and 2,577.84 is: 3,556.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.36 : 5,385.12 = 2,577.84 : x
  2. Step 2: Convert to fraction form
    3,903.36/5,385.12 = 2,577.84/x
  3. Step 3: Cross multiply
    3,903.36x = 5,385.12 × 2,577.84
  4. Step 4: Simplify right side
    3,903.36x = 13,881,977.74
  5. Step 5: Solve for x
    x = 13,881,977.74/3,903.36
  6. Step 6: Final answer
    x = 3,556.42

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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.