Home / 2,773.28-4,156.44-1,128.08

Finding the Fourth Proportional to 2,773.28, 4,156.44 and 1,128.08

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Solution

The fourth proportional to 2,773.28, 4,156.44 and 1,128.08 is: 1,690.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,773.28 : 4,156.44 = 1,128.08 : x
  2. Step 2: Convert to fraction form
    2,773.28/4,156.44 = 1,128.08/x
  3. Step 3: Cross multiply
    2,773.28x = 4,156.44 × 1,128.08
  4. Step 4: Simplify right side
    2,773.28x = 4,688,796.84
  5. Step 5: Solve for x
    x = 4,688,796.84/2,773.28
  6. Step 6: Final answer
    x = 1,690.70

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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.