Home / 3,103.12-4,282.38-1,705.90

Finding the Fourth Proportional to 3,103.12, 4,282.38 and 1,705.90

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Solution

The fourth proportional to 3,103.12, 4,282.38 and 1,705.90 is: 2,354.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.12 : 4,282.38 = 1,705.90 : x
  2. Step 2: Convert to fraction form
    3,103.12/4,282.38 = 1,705.90/x
  3. Step 3: Cross multiply
    3,103.12x = 4,282.38 × 1,705.90
  4. Step 4: Simplify right side
    3,103.12x = 7,305,312.04
  5. Step 5: Solve for x
    x = 7,305,312.04/3,103.12
  6. Step 6: Final answer
    x = 2,354.18

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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.