Home / 2,771.95-4,157.92-1,128.13

Finding the Fourth Proportional to 2,771.95, 4,157.92 and 1,128.13

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Solution

The fourth proportional to 2,771.95, 4,157.92 and 1,128.13 is: 1,692.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.95 : 4,157.92 = 1,128.13 : x
  2. Step 2: Convert to fraction form
    2,771.95/4,157.92 = 1,128.13/x
  3. Step 3: Cross multiply
    2,771.95x = 4,157.92 × 1,128.13
  4. Step 4: Simplify right side
    2,771.95x = 4,690,674.29
  5. Step 5: Solve for x
    x = 4,690,674.29/2,771.95
  6. Step 6: Final answer
    x = 1,692.19

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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.