Home / 2,912.36-3,999.49-2,492.72

Finding the Fourth Proportional to 2,912.36, 3,999.49 and 2,492.72

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Solution

The fourth proportional to 2,912.36, 3,999.49 and 2,492.72 is: 3,423.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.36 : 3,999.49 = 2,492.72 : x
  2. Step 2: Convert to fraction form
    2,912.36/3,999.49 = 2,492.72/x
  3. Step 3: Cross multiply
    2,912.36x = 3,999.49 × 2,492.72
  4. Step 4: Simplify right side
    2,912.36x = 9,969,608.71
  5. Step 5: Solve for x
    x = 9,969,608.71/2,912.36
  6. Step 6: Final answer
    x = 3,423.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.