Home / 3,712-5,122.48-2,220.25

Finding the Fourth Proportional to 3,712, 5,122.48 and 2,220.25

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Solution

The fourth proportional to 3,712, 5,122.48 and 2,220.25 is: 3,063.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712 : 5,122.48 = 2,220.25 : x
  2. Step 2: Convert to fraction form
    3,712/5,122.48 = 2,220.25/x
  3. Step 3: Cross multiply
    3,712x = 5,122.48 × 2,220.25
  4. Step 4: Simplify right side
    3,712x = 11,373,186.22
  5. Step 5: Solve for x
    x = 11,373,186.22/3,712
  6. Step 6: Final answer
    x = 3,063.90

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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.