Home / 3,103.12-4,282.40-1,705.92

Finding the Fourth Proportional to 3,103.12, 4,282.40 and 1,705.92

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Solution

The fourth proportional to 3,103.12, 4,282.40 and 1,705.92 is: 2,354.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.12 : 4,282.40 = 1,705.92 : x
  2. Step 2: Convert to fraction form
    3,103.12/4,282.40 = 1,705.92/x
  3. Step 3: Cross multiply
    3,103.12x = 4,282.40 × 1,705.92
  4. Step 4: Simplify right side
    3,103.12x = 7,305,431.81
  5. Step 5: Solve for x
    x = 7,305,431.81/3,103.12
  6. Step 6: Final answer
    x = 2,354.22

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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.