Home / 1,971.53-2,961.36-1,905.92

Finding the Fourth Proportional to 1,971.53, 2,961.36 and 1,905.92

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Solution

The fourth proportional to 1,971.53, 2,961.36 and 1,905.92 is: 2,862.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.53 : 2,961.36 = 1,905.92 : x
  2. Step 2: Convert to fraction form
    1,971.53/2,961.36 = 1,905.92/x
  3. Step 3: Cross multiply
    1,971.53x = 2,961.36 × 1,905.92
  4. Step 4: Simplify right side
    1,971.53x = 5,644,111.55
  5. Step 5: Solve for x
    x = 5,644,111.55/1,971.53
  6. Step 6: Final answer
    x = 2,862.81

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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.