Home / 3,700.12-5,107.26-2,129.32

Finding the Fourth Proportional to 3,700.12, 5,107.26 and 2,129.32

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Solution

The fourth proportional to 3,700.12, 5,107.26 and 2,129.32 is: 2,939.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,700.12 : 5,107.26 = 2,129.32 : x
  2. Step 2: Convert to fraction form
    3,700.12/5,107.26 = 2,129.32/x
  3. Step 3: Cross multiply
    3,700.12x = 5,107.26 × 2,129.32
  4. Step 4: Simplify right side
    3,700.12x = 10,874,990.86
  5. Step 5: Solve for x
    x = 10,874,990.86/3,700.12
  6. Step 6: Final answer
    x = 2,939.09

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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.