Home / 1,943.21-2,912.77-1,395.10

Finding the Fourth Proportional to 1,943.21, 2,912.77 and 1,395.10

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Solution

The fourth proportional to 1,943.21, 2,912.77 and 1,395.10 is: 2,091.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.21 : 2,912.77 = 1,395.10 : x
  2. Step 2: Convert to fraction form
    1,943.21/2,912.77 = 1,395.10/x
  3. Step 3: Cross multiply
    1,943.21x = 2,912.77 × 1,395.10
  4. Step 4: Simplify right side
    1,943.21x = 4,063,610.81
  5. Step 5: Solve for x
    x = 4,063,610.81/1,943.21
  6. Step 6: Final answer
    x = 2,091.18

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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.