Home / 1,319.33-1,975.48-1,089.22

Finding the Fourth Proportional to 1,319.33, 1,975.48 and 1,089.22

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Solution

The fourth proportional to 1,319.33, 1,975.48 and 1,089.22 is: 1,630.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.33 : 1,975.48 = 1,089.22 : x
  2. Step 2: Convert to fraction form
    1,319.33/1,975.48 = 1,089.22/x
  3. Step 3: Cross multiply
    1,319.33x = 1,975.48 × 1,089.22
  4. Step 4: Simplify right side
    1,319.33x = 2,151,732.33
  5. Step 5: Solve for x
    x = 2,151,732.33/1,319.33
  6. Step 6: Final answer
    x = 1,630.93

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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.