Home / 1,983.36-2,740.44-1,913.28

Finding the Fourth Proportional to 1,983.36, 2,740.44 and 1,913.28

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Solution

The fourth proportional to 1,983.36, 2,740.44 and 1,913.28 is: 2,643.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.36 : 2,740.44 = 1,913.28 : x
  2. Step 2: Convert to fraction form
    1,983.36/2,740.44 = 1,913.28/x
  3. Step 3: Cross multiply
    1,983.36x = 2,740.44 × 1,913.28
  4. Step 4: Simplify right side
    1,983.36x = 5,243,229.04
  5. Step 5: Solve for x
    x = 5,243,229.04/1,983.36
  6. Step 6: Final answer
    x = 2,643.61

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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.