Home / 3,418.96-5,128.44-2,692.40

Finding the Fourth Proportional to 3,418.96, 5,128.44 and 2,692.40

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Solution

The fourth proportional to 3,418.96, 5,128.44 and 2,692.40 is: 4,038.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.96 : 5,128.44 = 2,692.40 : x
  2. Step 2: Convert to fraction form
    3,418.96/5,128.44 = 2,692.40/x
  3. Step 3: Cross multiply
    3,418.96x = 5,128.44 × 2,692.40
  4. Step 4: Simplify right side
    3,418.96x = 13,807,811.86
  5. Step 5: Solve for x
    x = 13,807,811.86/3,418.96
  6. Step 6: Final answer
    x = 4,038.60

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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.