Home / 3,815.85-5,265.61-2,114.34

Finding the Fourth Proportional to 3,815.85, 5,265.61 and 2,114.34

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Solution

The fourth proportional to 3,815.85, 5,265.61 and 2,114.34 is: 2,917.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.85 : 5,265.61 = 2,114.34 : x
  2. Step 2: Convert to fraction form
    3,815.85/5,265.61 = 2,114.34/x
  3. Step 3: Cross multiply
    3,815.85x = 5,265.61 × 2,114.34
  4. Step 4: Simplify right side
    3,815.85x = 11,133,279.28
  5. Step 5: Solve for x
    x = 11,133,279.28/3,815.85
  6. Step 6: Final answer
    x = 2,917.64

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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.