Home / 3,884.55-5,829.45-1,420.12

Finding the Fourth Proportional to 3,884.55, 5,829.45 and 1,420.12

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Solution

The fourth proportional to 3,884.55, 5,829.45 and 1,420.12 is: 2,131.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,884.55 : 5,829.45 = 1,420.12 : x
  2. Step 2: Convert to fraction form
    3,884.55/5,829.45 = 1,420.12/x
  3. Step 3: Cross multiply
    3,884.55x = 5,829.45 × 1,420.12
  4. Step 4: Simplify right side
    3,884.55x = 8,278,518.53
  5. Step 5: Solve for x
    x = 8,278,518.53/3,884.55
  6. Step 6: Final answer
    x = 2,131.14

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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.