Home / 3,421.16-5,131.94-1,230.12

Finding the Fourth Proportional to 3,421.16, 5,131.94 and 1,230.12

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Solution

The fourth proportional to 3,421.16, 5,131.94 and 1,230.12 is: 1,845.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.16 : 5,131.94 = 1,230.12 : x
  2. Step 2: Convert to fraction form
    3,421.16/5,131.94 = 1,230.12/x
  3. Step 3: Cross multiply
    3,421.16x = 5,131.94 × 1,230.12
  4. Step 4: Simplify right side
    3,421.16x = 6,312,902.03
  5. Step 5: Solve for x
    x = 6,312,902.03/3,421.16
  6. Step 6: Final answer
    x = 1,845.25

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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.