Home / 3,943.90-5,425.81-3,834.55

Finding the Fourth Proportional to 3,943.90, 5,425.81 and 3,834.55

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Solution

The fourth proportional to 3,943.90, 5,425.81 and 3,834.55 is: 5,275.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.90 : 5,425.81 = 3,834.55 : x
  2. Step 2: Convert to fraction form
    3,943.90/5,425.81 = 3,834.55/x
  3. Step 3: Cross multiply
    3,943.90x = 5,425.81 × 3,834.55
  4. Step 4: Simplify right side
    3,943.90x = 20,805,539.74
  5. Step 5: Solve for x
    x = 20,805,539.74/3,943.90
  6. Step 6: Final answer
    x = 5,275.37

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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.