Home / 2,657.21-3,985.82-1,270.22

Finding the Fourth Proportional to 2,657.21, 3,985.82 and 1,270.22

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Solution

The fourth proportional to 2,657.21, 3,985.82 and 1,270.22 is: 1,905.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.21 : 3,985.82 = 1,270.22 : x
  2. Step 2: Convert to fraction form
    2,657.21/3,985.82 = 1,270.22/x
  3. Step 3: Cross multiply
    2,657.21x = 3,985.82 × 1,270.22
  4. Step 4: Simplify right side
    2,657.21x = 5,062,881.42
  5. Step 5: Solve for x
    x = 5,062,881.42/2,657.21
  6. Step 6: Final answer
    x = 1,905.34

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Similar ratio
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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.