Home / 2,447.92-3,672.44-2,085.20

Finding the Fourth Proportional to 2,447.92, 3,672.44 and 2,085.20

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Solution

The fourth proportional to 2,447.92, 3,672.44 and 2,085.20 is: 3,128.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.92 : 3,672.44 = 2,085.20 : x
  2. Step 2: Convert to fraction form
    2,447.92/3,672.44 = 2,085.20/x
  3. Step 3: Cross multiply
    2,447.92x = 3,672.44 × 2,085.20
  4. Step 4: Simplify right side
    2,447.92x = 7,657,771.89
  5. Step 5: Solve for x
    x = 7,657,771.89/2,447.92
  6. Step 6: Final answer
    x = 3,128.28

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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.