Home / 3,886-5,829.20-3,689.16

Finding the Fourth Proportional to 3,886, 5,829.20 and 3,689.16

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Solution

The fourth proportional to 3,886, 5,829.20 and 3,689.16 is: 5,533.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886 : 5,829.20 = 3,689.16 : x
  2. Step 2: Convert to fraction form
    3,886/5,829.20 = 3,689.16/x
  3. Step 3: Cross multiply
    3,886x = 5,829.20 × 3,689.16
  4. Step 4: Simplify right side
    3,886x = 21,504,851.47
  5. Step 5: Solve for x
    x = 21,504,851.47/3,886
  6. Step 6: Final answer
    x = 5,533.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.