Home / 3,431.32-5,146.86-1,455.68

Finding the Fourth Proportional to 3,431.32, 5,146.86 and 1,455.68

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Solution

The fourth proportional to 3,431.32, 5,146.86 and 1,455.68 is: 2,183.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.32 : 5,146.86 = 1,455.68 : x
  2. Step 2: Convert to fraction form
    3,431.32/5,146.86 = 1,455.68/x
  3. Step 3: Cross multiply
    3,431.32x = 5,146.86 × 1,455.68
  4. Step 4: Simplify right side
    3,431.32x = 7,492,181.16
  5. Step 5: Solve for x
    x = 7,492,181.16/3,431.32
  6. Step 6: Final answer
    x = 2,183.47

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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.