Home / 3,785.75-5,225.06-2,129.75

Finding the Fourth Proportional to 3,785.75, 5,225.06 and 2,129.75

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Solution

The fourth proportional to 3,785.75, 5,225.06 and 2,129.75 is: 2,939.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.75 : 5,225.06 = 2,129.75 : x
  2. Step 2: Convert to fraction form
    3,785.75/5,225.06 = 2,129.75/x
  3. Step 3: Cross multiply
    3,785.75x = 5,225.06 × 2,129.75
  4. Step 4: Simplify right side
    3,785.75x = 11,128,060.89
  5. Step 5: Solve for x
    x = 11,128,060.89/3,785.75
  6. Step 6: Final answer
    x = 2,939.46

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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.