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Finding the Fourth Proportional to 1,884.94, 2,601.21 and 1,138.76

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Solution

The fourth proportional to 1,884.94, 2,601.21 and 1,138.76 is: 1,571.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,884.94 : 2,601.21 = 1,138.76 : x
  2. Step 2: Convert to fraction form
    1,884.94/2,601.21 = 1,138.76/x
  3. Step 3: Cross multiply
    1,884.94x = 2,601.21 × 1,138.76
  4. Step 4: Simplify right side
    1,884.94x = 2,962,141.20
  5. Step 5: Solve for x
    x = 2,962,141.20/1,884.94
  6. Step 6: Final answer
    x = 1,571.48

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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.