Home / 4,083.48-5,621.40-3,689.28

Finding the Fourth Proportional to 4,083.48, 5,621.40 and 3,689.28

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Solution

The fourth proportional to 4,083.48, 5,621.40 and 3,689.28 is: 5,078.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,083.48 : 5,621.40 = 3,689.28 : x
  2. Step 2: Convert to fraction form
    4,083.48/5,621.40 = 3,689.28/x
  3. Step 3: Cross multiply
    4,083.48x = 5,621.40 × 3,689.28
  4. Step 4: Simplify right side
    4,083.48x = 20,738,918.59
  5. Step 5: Solve for x
    x = 20,738,918.59/4,083.48
  6. Step 6: Final answer
    x = 5,078.74

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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.