Home / 3,431.87-5,149.67-1,457.19

Finding the Fourth Proportional to 3,431.87, 5,149.67 and 1,457.19

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Solution

The fourth proportional to 3,431.87, 5,149.67 and 1,457.19 is: 2,186.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.87 : 5,149.67 = 1,457.19 : x
  2. Step 2: Convert to fraction form
    3,431.87/5,149.67 = 1,457.19/x
  3. Step 3: Cross multiply
    3,431.87x = 5,149.67 × 1,457.19
  4. Step 4: Simplify right side
    3,431.87x = 7,504,051.27
  5. Step 5: Solve for x
    x = 7,504,051.27/3,431.87
  6. Step 6: Final answer
    x = 2,186.58

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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.