Home / 3,934.78-5,429.93-2,166.35

Finding the Fourth Proportional to 3,934.78, 5,429.93 and 2,166.35

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Solution

The fourth proportional to 3,934.78, 5,429.93 and 2,166.35 is: 2,989.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.78 : 5,429.93 = 2,166.35 : x
  2. Step 2: Convert to fraction form
    3,934.78/5,429.93 = 2,166.35/x
  3. Step 3: Cross multiply
    3,934.78x = 5,429.93 × 2,166.35
  4. Step 4: Simplify right side
    3,934.78x = 11,763,090.87
  5. Step 5: Solve for x
    x = 11,763,090.87/3,934.78
  6. Step 6: Final answer
    x = 2,989.52

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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.