Home / 3,747.28-5,172.36-2,420.96

Finding the Fourth Proportional to 3,747.28, 5,172.36 and 2,420.96

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Solution

The fourth proportional to 3,747.28, 5,172.36 and 2,420.96 is: 3,341.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.28 : 5,172.36 = 2,420.96 : x
  2. Step 2: Convert to fraction form
    3,747.28/5,172.36 = 2,420.96/x
  3. Step 3: Cross multiply
    3,747.28x = 5,172.36 × 2,420.96
  4. Step 4: Simplify right side
    3,747.28x = 12,522,076.67
  5. Step 5: Solve for x
    x = 12,522,076.67/3,747.28
  6. Step 6: Final answer
    x = 3,341.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.