Home / 3,981.93-5,531.06-3,918.36

Finding the Fourth Proportional to 3,981.93, 5,531.06 and 3,918.36

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Solution

The fourth proportional to 3,981.93, 5,531.06 and 3,918.36 is: 5,442.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.93 : 5,531.06 = 3,918.36 : x
  2. Step 2: Convert to fraction form
    3,981.93/5,531.06 = 3,918.36/x
  3. Step 3: Cross multiply
    3,981.93x = 5,531.06 × 3,918.36
  4. Step 4: Simplify right side
    3,981.93x = 21,672,684.26
  5. Step 5: Solve for x
    x = 21,672,684.26/3,981.93
  6. Step 6: Final answer
    x = 5,442.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.