Home / 1,921.91-2,650.94-1,174.92

Finding the Fourth Proportional to 1,921.91, 2,650.94 and 1,174.92

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Solution

The fourth proportional to 1,921.91, 2,650.94 and 1,174.92 is: 1,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.91 : 2,650.94 = 1,174.92 : x
  2. Step 2: Convert to fraction form
    1,921.91/2,650.94 = 1,174.92/x
  3. Step 3: Cross multiply
    1,921.91x = 2,650.94 × 1,174.92
  4. Step 4: Simplify right side
    1,921.91x = 3,114,636.55
  5. Step 5: Solve for x
    x = 3,114,636.55/1,921.91
  6. Step 6: Final answer
    x = 1,620.60

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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.