Home / 3,780.96-5,672.05-1,316.48

Finding the Fourth Proportional to 3,780.96, 5,672.05 and 1,316.48

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Solution

The fourth proportional to 3,780.96, 5,672.05 and 1,316.48 is: 1,974.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.96 : 5,672.05 = 1,316.48 : x
  2. Step 2: Convert to fraction form
    3,780.96/5,672.05 = 1,316.48/x
  3. Step 3: Cross multiply
    3,780.96x = 5,672.05 × 1,316.48
  4. Step 4: Simplify right side
    3,780.96x = 7,467,133.80
  5. Step 5: Solve for x
    x = 7,467,133.80/3,780.96
  6. Step 6: Final answer
    x = 1,974.93

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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.