Home / 3,486.06-5,230.40-2,100.38

Finding the Fourth Proportional to 3,486.06, 5,230.40 and 2,100.38

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Solution

The fourth proportional to 3,486.06, 5,230.40 and 2,100.38 is: 3,151.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.06 : 5,230.40 = 2,100.38 : x
  2. Step 2: Convert to fraction form
    3,486.06/5,230.40 = 2,100.38/x
  3. Step 3: Cross multiply
    3,486.06x = 5,230.40 × 2,100.38
  4. Step 4: Simplify right side
    3,486.06x = 10,985,790.90
  5. Step 5: Solve for x
    x = 10,985,790.90/3,486.06
  6. Step 6: Final answer
    x = 3,151.35

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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.