Home / 1,969.10-2,717.93-1,297.40

Finding the Fourth Proportional to 1,969.10, 2,717.93 and 1,297.40

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Solution

The fourth proportional to 1,969.10, 2,717.93 and 1,297.40 is: 1,790.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.10 : 2,717.93 = 1,297.40 : x
  2. Step 2: Convert to fraction form
    1,969.10/2,717.93 = 1,297.40/x
  3. Step 3: Cross multiply
    1,969.10x = 2,717.93 × 1,297.40
  4. Step 4: Simplify right side
    1,969.10x = 3,526,232.38
  5. Step 5: Solve for x
    x = 3,526,232.38/1,969.10
  6. Step 6: Final answer
    x = 1,790.78

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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.