Home / 3,118.39-4,305.14-2,486.89

Finding the Fourth Proportional to 3,118.39, 4,305.14 and 2,486.89

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Solution

The fourth proportional to 3,118.39, 4,305.14 and 2,486.89 is: 3,433.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.39 : 4,305.14 = 2,486.89 : x
  2. Step 2: Convert to fraction form
    3,118.39/4,305.14 = 2,486.89/x
  3. Step 3: Cross multiply
    3,118.39x = 4,305.14 × 2,486.89
  4. Step 4: Simplify right side
    3,118.39x = 10,706,409.61
  5. Step 5: Solve for x
    x = 10,706,409.61/3,118.39
  6. Step 6: Final answer
    x = 3,433.31

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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.