Home / 3,431.69-5,149.55-1,457.20

Finding the Fourth Proportional to 3,431.69, 5,149.55 and 1,457.20

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Solution

The fourth proportional to 3,431.69, 5,149.55 and 1,457.20 is: 2,186.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.69 : 5,149.55 = 1,457.20 : x
  2. Step 2: Convert to fraction form
    3,431.69/5,149.55 = 1,457.20/x
  3. Step 3: Cross multiply
    3,431.69x = 5,149.55 × 1,457.20
  4. Step 4: Simplify right side
    3,431.69x = 7,503,924.26
  5. Step 5: Solve for x
    x = 7,503,924.26/3,431.69
  6. Step 6: Final answer
    x = 2,186.66

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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.