Home / 3,191.31-4,398.57-2,739.87

Finding the Fourth Proportional to 3,191.31, 4,398.57 and 2,739.87

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Solution

The fourth proportional to 3,191.31, 4,398.57 and 2,739.87 is: 3,776.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.31 : 4,398.57 = 2,739.87 : x
  2. Step 2: Convert to fraction form
    3,191.31/4,398.57 = 2,739.87/x
  3. Step 3: Cross multiply
    3,191.31x = 4,398.57 × 2,739.87
  4. Step 4: Simplify right side
    3,191.31x = 12,051,509.99
  5. Step 5: Solve for x
    x = 12,051,509.99/3,191.31
  6. Step 6: Final answer
    x = 3,776.35

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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.