Home / 3,717.76-5,128.32-2,321.28

Finding the Fourth Proportional to 3,717.76, 5,128.32 and 2,321.28

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Solution

The fourth proportional to 3,717.76, 5,128.32 and 2,321.28 is: 3,202.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.76 : 5,128.32 = 2,321.28 : x
  2. Step 2: Convert to fraction form
    3,717.76/5,128.32 = 2,321.28/x
  3. Step 3: Cross multiply
    3,717.76x = 5,128.32 × 2,321.28
  4. Step 4: Simplify right side
    3,717.76x = 11,904,266.65
  5. Step 5: Solve for x
    x = 11,904,266.65/3,717.76
  6. Step 6: Final answer
    x = 3,202.00

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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.