Home / 3,918.43-5,877.36-1,838.91

Finding the Fourth Proportional to 3,918.43, 5,877.36 and 1,838.91

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Solution

The fourth proportional to 3,918.43, 5,877.36 and 1,838.91 is: 2,758.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.43 : 5,877.36 = 1,838.91 : x
  2. Step 2: Convert to fraction form
    3,918.43/5,877.36 = 1,838.91/x
  3. Step 3: Cross multiply
    3,918.43x = 5,877.36 × 1,838.91
  4. Step 4: Simplify right side
    3,918.43x = 10,807,936.08
  5. Step 5: Solve for x
    x = 10,807,936.08/3,918.43
  6. Step 6: Final answer
    x = 2,758.23

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1.5x scale

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.