Home / 2,289.85-3,158.57-1,691.73

Finding the Fourth Proportional to 2,289.85, 3,158.57 and 1,691.73

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Solution

The fourth proportional to 2,289.85, 3,158.57 and 1,691.73 is: 2,333.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.85 : 3,158.57 = 1,691.73 : x
  2. Step 2: Convert to fraction form
    2,289.85/3,158.57 = 1,691.73/x
  3. Step 3: Cross multiply
    2,289.85x = 3,158.57 × 1,691.73
  4. Step 4: Simplify right side
    2,289.85x = 5,343,451.86
  5. Step 5: Solve for x
    x = 5,343,451.86/2,289.85
  6. Step 6: Final answer
    x = 2,333.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.