Home / 3,829.77-5,285.37-2,151.28

Finding the Fourth Proportional to 3,829.77, 5,285.37 and 2,151.28

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Solution

The fourth proportional to 3,829.77, 5,285.37 and 2,151.28 is: 2,968.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,829.77 : 5,285.37 = 2,151.28 : x
  2. Step 2: Convert to fraction form
    3,829.77/5,285.37 = 2,151.28/x
  3. Step 3: Cross multiply
    3,829.77x = 5,285.37 × 2,151.28
  4. Step 4: Simplify right side
    3,829.77x = 11,370,310.77
  5. Step 5: Solve for x
    x = 11,370,310.77/3,829.77
  6. Step 6: Final answer
    x = 2,968.93

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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.