Home / 3,120.49-4,684.83-2,431.57

Finding the Fourth Proportional to 3,120.49, 4,684.83 and 2,431.57

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Solution

The fourth proportional to 3,120.49, 4,684.83 and 2,431.57 is: 3,650.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.49 : 4,684.83 = 2,431.57 : x
  2. Step 2: Convert to fraction form
    3,120.49/4,684.83 = 2,431.57/x
  3. Step 3: Cross multiply
    3,120.49x = 4,684.83 × 2,431.57
  4. Step 4: Simplify right side
    3,120.49x = 11,391,492.08
  5. Step 5: Solve for x
    x = 11,391,492.08/3,120.49
  6. Step 6: Final answer
    x = 3,650.55

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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.