Home / 2,770.60-4,155.81-1,126.72

Finding the Fourth Proportional to 2,770.60, 4,155.81 and 1,126.72

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Solution

The fourth proportional to 2,770.60, 4,155.81 and 1,126.72 is: 1,690.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.60 : 4,155.81 = 1,126.72 : x
  2. Step 2: Convert to fraction form
    2,770.60/4,155.81 = 1,126.72/x
  3. Step 3: Cross multiply
    2,770.60x = 4,155.81 × 1,126.72
  4. Step 4: Simplify right side
    2,770.60x = 4,682,434.24
  5. Step 5: Solve for x
    x = 4,682,434.24/2,770.60
  6. Step 6: Final answer
    x = 1,690.04

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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.