Home / 3,486.12-5,230.38-1,406.58

Finding the Fourth Proportional to 3,486.12, 5,230.38 and 1,406.58

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Solution

The fourth proportional to 3,486.12, 5,230.38 and 1,406.58 is: 2,110.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.12 : 5,230.38 = 1,406.58 : x
  2. Step 2: Convert to fraction form
    3,486.12/5,230.38 = 1,406.58/x
  3. Step 3: Cross multiply
    3,486.12x = 5,230.38 × 1,406.58
  4. Step 4: Simplify right side
    3,486.12x = 7,356,947.90
  5. Step 5: Solve for x
    x = 7,356,947.90/3,486.12
  6. Step 6: Final answer
    x = 2,110.35

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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.