Home / 3,431.12-5,146.67-1,239.35

Finding the Fourth Proportional to 3,431.12, 5,146.67 and 1,239.35

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Solution

The fourth proportional to 3,431.12, 5,146.67 and 1,239.35 is: 1,859.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.12 : 5,146.67 = 1,239.35 : x
  2. Step 2: Convert to fraction form
    3,431.12/5,146.67 = 1,239.35/x
  3. Step 3: Cross multiply
    3,431.12x = 5,146.67 × 1,239.35
  4. Step 4: Simplify right side
    3,431.12x = 6,378,493.53
  5. Step 5: Solve for x
    x = 6,378,493.53/3,431.12
  6. Step 6: Final answer
    x = 1,859.01

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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.