Home / 3,943.65-5,442.75-3,813.87

Finding the Fourth Proportional to 3,943.65, 5,442.75 and 3,813.87

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Solution

The fourth proportional to 3,943.65, 5,442.75 and 3,813.87 is: 5,263.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.65 : 5,442.75 = 3,813.87 : x
  2. Step 2: Convert to fraction form
    3,943.65/5,442.75 = 3,813.87/x
  3. Step 3: Cross multiply
    3,943.65x = 5,442.75 × 3,813.87
  4. Step 4: Simplify right side
    3,943.65x = 20,757,940.94
  5. Step 5: Solve for x
    x = 20,757,940.94/3,943.65
  6. Step 6: Final answer
    x = 5,263.64

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1.5x scale

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.