Home / 2,199.12-3,293.64-1,705.20

Finding the Fourth Proportional to 2,199.12, 3,293.64 and 1,705.20

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Solution

The fourth proportional to 2,199.12, 3,293.64 and 1,705.20 is: 2,553.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.12 : 3,293.64 = 1,705.20 : x
  2. Step 2: Convert to fraction form
    2,199.12/3,293.64 = 1,705.20/x
  3. Step 3: Cross multiply
    2,199.12x = 3,293.64 × 1,705.20
  4. Step 4: Simplify right side
    2,199.12x = 5,616,314.93
  5. Step 5: Solve for x
    x = 5,616,314.93/2,199.12
  6. Step 6: Final answer
    x = 2,553.89

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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.