Home / 3,687.45-5,088.52-2,115.51

Finding the Fourth Proportional to 3,687.45, 5,088.52 and 2,115.51

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Solution

The fourth proportional to 3,687.45, 5,088.52 and 2,115.51 is: 2,919.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.45 : 5,088.52 = 2,115.51 : x
  2. Step 2: Convert to fraction form
    3,687.45/5,088.52 = 2,115.51/x
  3. Step 3: Cross multiply
    3,687.45x = 5,088.52 × 2,115.51
  4. Step 4: Simplify right side
    3,687.45x = 10,764,814.95
  5. Step 5: Solve for x
    x = 10,764,814.95/3,687.45
  6. Step 6: Final answer
    x = 2,919.31

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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.