Home / 3,403.85-4,697.31-1,911.75

Finding the Fourth Proportional to 3,403.85, 4,697.31 and 1,911.75

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Solution

The fourth proportional to 3,403.85, 4,697.31 and 1,911.75 is: 2,638.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.85 : 4,697.31 = 1,911.75 : x
  2. Step 2: Convert to fraction form
    3,403.85/4,697.31 = 1,911.75/x
  3. Step 3: Cross multiply
    3,403.85x = 4,697.31 × 1,911.75
  4. Step 4: Simplify right side
    3,403.85x = 8,980,082.39
  5. Step 5: Solve for x
    x = 8,980,082.39/3,403.85
  6. Step 6: Final answer
    x = 2,638.22

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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.