Home / 3,926.80-5,420.10-2,748.16

Finding the Fourth Proportional to 3,926.80, 5,420.10 and 2,748.16

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Solution

The fourth proportional to 3,926.80, 5,420.10 and 2,748.16 is: 3,793.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.80 : 5,420.10 = 2,748.16 : x
  2. Step 2: Convert to fraction form
    3,926.80/5,420.10 = 2,748.16/x
  3. Step 3: Cross multiply
    3,926.80x = 5,420.10 × 2,748.16
  4. Step 4: Simplify right side
    3,926.80x = 14,895,302.02
  5. Step 5: Solve for x
    x = 14,895,302.02/3,926.80
  6. Step 6: Final answer
    x = 3,793.24

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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.