Home / 2,001.39-2,999.35-1,269.65

Finding the Fourth Proportional to 2,001.39, 2,999.35 and 1,269.65

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Solution

The fourth proportional to 2,001.39, 2,999.35 and 1,269.65 is: 1,902.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,001.39 : 2,999.35 = 1,269.65 : x
  2. Step 2: Convert to fraction form
    2,001.39/2,999.35 = 1,269.65/x
  3. Step 3: Cross multiply
    2,001.39x = 2,999.35 × 1,269.65
  4. Step 4: Simplify right side
    2,001.39x = 3,808,133.81
  5. Step 5: Solve for x
    x = 3,808,133.81/2,001.39
  6. Step 6: Final answer
    x = 1,902.75

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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.