Home / 1,943.26-2,681.70-1,115.26

Finding the Fourth Proportional to 1,943.26, 2,681.70 and 1,115.26

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Solution

The fourth proportional to 1,943.26, 2,681.70 and 1,115.26 is: 1,539.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.26 : 2,681.70 = 1,115.26 : x
  2. Step 2: Convert to fraction form
    1,943.26/2,681.70 = 1,115.26/x
  3. Step 3: Cross multiply
    1,943.26x = 2,681.70 × 1,115.26
  4. Step 4: Simplify right side
    1,943.26x = 2,990,792.74
  5. Step 5: Solve for x
    x = 2,990,792.74/1,943.26
  6. Step 6: Final answer
    x = 1,539.06

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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.