Home / 3,934.58-5,429.67-2,166.15

Finding the Fourth Proportional to 3,934.58, 5,429.67 and 2,166.15

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Solution

The fourth proportional to 3,934.58, 5,429.67 and 2,166.15 is: 2,989.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.58 : 5,429.67 = 2,166.15 : x
  2. Step 2: Convert to fraction form
    3,934.58/5,429.67 = 2,166.15/x
  3. Step 3: Cross multiply
    3,934.58x = 5,429.67 × 2,166.15
  4. Step 4: Simplify right side
    3,934.58x = 11,761,479.67
  5. Step 5: Solve for x
    x = 11,761,479.67/3,934.58
  6. Step 6: Final answer
    x = 2,989.26

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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.