Home / 5,940.43-8,911.80-1,780.11

Finding the Fourth Proportional to 5,940.43, 8,911.80 and 1,780.11

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Solution

The fourth proportional to 5,940.43, 8,911.80 and 1,780.11 is: 2,670.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,940.43 : 8,911.80 = 1,780.11 : x
  2. Step 2: Convert to fraction form
    5,940.43/8,911.80 = 1,780.11/x
  3. Step 3: Cross multiply
    5,940.43x = 8,911.80 × 1,780.11
  4. Step 4: Simplify right side
    5,940.43x = 15,863,984.30
  5. Step 5: Solve for x
    x = 15,863,984.30/5,940.43
  6. Step 6: Final answer
    x = 2,670.51

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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.