Home / 3,918.65-5,877.97-3,690.43

Finding the Fourth Proportional to 3,918.65, 5,877.97 and 3,690.43

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Solution

The fourth proportional to 3,918.65, 5,877.97 and 3,690.43 is: 5,535.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.65 : 5,877.97 = 3,690.43 : x
  2. Step 2: Convert to fraction form
    3,918.65/5,877.97 = 3,690.43/x
  3. Step 3: Cross multiply
    3,918.65x = 5,877.97 × 3,690.43
  4. Step 4: Simplify right side
    3,918.65x = 21,692,212.91
  5. Step 5: Solve for x
    x = 21,692,212.91/3,918.65
  6. Step 6: Final answer
    x = 5,535.64

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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.