Home / 1,379.07-2,069.35-1,071.54

Finding the Fourth Proportional to 1,379.07, 2,069.35 and 1,071.54

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Solution

The fourth proportional to 1,379.07, 2,069.35 and 1,071.54 is: 1,607.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379.07 : 2,069.35 = 1,071.54 : x
  2. Step 2: Convert to fraction form
    1,379.07/2,069.35 = 1,071.54/x
  3. Step 3: Cross multiply
    1,379.07x = 2,069.35 × 1,071.54
  4. Step 4: Simplify right side
    1,379.07x = 2,217,388.62
  5. Step 5: Solve for x
    x = 2,217,388.62/1,379.07
  6. Step 6: Final answer
    x = 1,607.89

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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.