Home / 3,472.25-5,208.31-839.72

Finding the Fourth Proportional to 3,472.25, 5,208.31 and 839.72

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Solution

The fourth proportional to 3,472.25, 5,208.31 and 839.72 is: 1,259.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,472.25 : 5,208.31 = 839.72 : x
  2. Step 2: Convert to fraction form
    3,472.25/5,208.31 = 839.72/x
  3. Step 3: Cross multiply
    3,472.25x = 5,208.31 × 839.72
  4. Step 4: Simplify right side
    3,472.25x = 4,373,536.14
  5. Step 5: Solve for x
    x = 4,373,536.14/3,472.25
  6. Step 6: Final answer
    x = 1,259.57

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1.5x scale

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.