Home / 3,286.07-4,931.08-1,311.36

Finding the Fourth Proportional to 3,286.07, 4,931.08 and 1,311.36

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Solution

The fourth proportional to 3,286.07, 4,931.08 and 1,311.36 is: 1,967.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,286.07 : 4,931.08 = 1,311.36 : x
  2. Step 2: Convert to fraction form
    3,286.07/4,931.08 = 1,311.36/x
  3. Step 3: Cross multiply
    3,286.07x = 4,931.08 × 1,311.36
  4. Step 4: Simplify right side
    3,286.07x = 6,466,399.30
  5. Step 5: Solve for x
    x = 6,466,399.30/3,286.07
  6. Step 6: Final answer
    x = 1,967.82

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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.