Home / 3,438.18-5,151.87-2,660.12

Finding the Fourth Proportional to 3,438.18, 5,151.87 and 2,660.12

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Solution

The fourth proportional to 3,438.18, 5,151.87 and 2,660.12 is: 3,986.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.18 : 5,151.87 = 2,660.12 : x
  2. Step 2: Convert to fraction form
    3,438.18/5,151.87 = 2,660.12/x
  3. Step 3: Cross multiply
    3,438.18x = 5,151.87 × 2,660.12
  4. Step 4: Simplify right side
    3,438.18x = 13,704,585.98
  5. Step 5: Solve for x
    x = 13,704,585.98/3,438.18
  6. Step 6: Final answer
    x = 3,986.00

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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.