Home / 3,865.69-5,334.54-2,140.92

Finding the Fourth Proportional to 3,865.69, 5,334.54 and 2,140.92

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Solution

The fourth proportional to 3,865.69, 5,334.54 and 2,140.92 is: 2,954.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.69 : 5,334.54 = 2,140.92 : x
  2. Step 2: Convert to fraction form
    3,865.69/5,334.54 = 2,140.92/x
  3. Step 3: Cross multiply
    3,865.69x = 5,334.54 × 2,140.92
  4. Step 4: Simplify right side
    3,865.69x = 11,420,833.41
  5. Step 5: Solve for x
    x = 11,420,833.41/3,865.69
  6. Step 6: Final answer
    x = 2,954.41

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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.