Home / 3,934.41-5,429.63-2,166.15

Finding the Fourth Proportional to 3,934.41, 5,429.63 and 2,166.15

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Solution

The fourth proportional to 3,934.41, 5,429.63 and 2,166.15 is: 2,989.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.41 : 5,429.63 = 2,166.15 : x
  2. Step 2: Convert to fraction form
    3,934.41/5,429.63 = 2,166.15/x
  3. Step 3: Cross multiply
    3,934.41x = 5,429.63 × 2,166.15
  4. Step 4: Simplify right side
    3,934.41x = 11,761,393.02
  5. Step 5: Solve for x
    x = 11,761,393.02/3,934.41
  6. Step 6: Final answer
    x = 2,989.37

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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.