Home / 1,580.62-2,371.76-1,121.36

Finding the Fourth Proportional to 1,580.62, 2,371.76 and 1,121.36

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Solution

The fourth proportional to 1,580.62, 2,371.76 and 1,121.36 is: 1,682.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.62 : 2,371.76 = 1,121.36 : x
  2. Step 2: Convert to fraction form
    1,580.62/2,371.76 = 1,121.36/x
  3. Step 3: Cross multiply
    1,580.62x = 2,371.76 × 1,121.36
  4. Step 4: Simplify right side
    1,580.62x = 2,659,596.79
  5. Step 5: Solve for x
    x = 2,659,596.79/1,580.62
  6. Step 6: Final answer
    x = 1,682.63

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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.