Home / 2,791.47-4,188.29-1,330.77

Finding the Fourth Proportional to 2,791.47, 4,188.29 and 1,330.77

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Solution

The fourth proportional to 2,791.47, 4,188.29 and 1,330.77 is: 1,996.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.47 : 4,188.29 = 1,330.77 : x
  2. Step 2: Convert to fraction form
    2,791.47/4,188.29 = 1,330.77/x
  3. Step 3: Cross multiply
    2,791.47x = 4,188.29 × 1,330.77
  4. Step 4: Simplify right side
    2,791.47x = 5,573,644.03
  5. Step 5: Solve for x
    x = 5,573,644.03/2,791.47
  6. Step 6: Final answer
    x = 1,996.67

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1.5x scale

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.