Home / 2,591.79-3,886.66-1,129.94

Finding the Fourth Proportional to 2,591.79, 3,886.66 and 1,129.94

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Solution

The fourth proportional to 2,591.79, 3,886.66 and 1,129.94 is: 1,694.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.79 : 3,886.66 = 1,129.94 : x
  2. Step 2: Convert to fraction form
    2,591.79/3,886.66 = 1,129.94/x
  3. Step 3: Cross multiply
    2,591.79x = 3,886.66 × 1,129.94
  4. Step 4: Simplify right side
    2,591.79x = 4,391,692.60
  5. Step 5: Solve for x
    x = 4,391,692.60/2,591.79
  6. Step 6: Final answer
    x = 1,694.46

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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.