Home / 2,665.39-3,999.81-1,204.55

Finding the Fourth Proportional to 2,665.39, 3,999.81 and 1,204.55

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Solution

The fourth proportional to 2,665.39, 3,999.81 and 1,204.55 is: 1,807.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.39 : 3,999.81 = 1,204.55 : x
  2. Step 2: Convert to fraction form
    2,665.39/3,999.81 = 1,204.55/x
  3. Step 3: Cross multiply
    2,665.39x = 3,999.81 × 1,204.55
  4. Step 4: Simplify right side
    2,665.39x = 4,817,981.14
  5. Step 5: Solve for x
    x = 4,817,981.14/2,665.39
  6. Step 6: Final answer
    x = 1,807.61

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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.