Home / 1,943.20-2,678.41-1,375.30

Finding the Fourth Proportional to 1,943.20, 2,678.41 and 1,375.30

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Solution

The fourth proportional to 1,943.20, 2,678.41 and 1,375.30 is: 1,895.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.20 : 2,678.41 = 1,375.30 : x
  2. Step 2: Convert to fraction form
    1,943.20/2,678.41 = 1,375.30/x
  3. Step 3: Cross multiply
    1,943.20x = 2,678.41 × 1,375.30
  4. Step 4: Simplify right side
    1,943.20x = 3,683,617.27
  5. Step 5: Solve for x
    x = 3,683,617.27/1,943.20
  6. Step 6: Final answer
    x = 1,895.64

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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.