Home / 3,815.35-5,265-2,137.03

Finding the Fourth Proportional to 3,815.35, 5,265 and 2,137.03

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Solution

The fourth proportional to 3,815.35, 5,265 and 2,137.03 is: 2,949.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.35 : 5,265 = 2,137.03 : x
  2. Step 2: Convert to fraction form
    3,815.35/5,265 = 2,137.03/x
  3. Step 3: Cross multiply
    3,815.35x = 5,265 × 2,137.03
  4. Step 4: Simplify right side
    3,815.35x = 11,251,479.40
  5. Step 5: Solve for x
    x = 11,251,479.40/3,815.35
  6. Step 6: Final answer
    x = 2,949.00

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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.