Home / 2,512.05-3,770.40-1,280.35

Finding the Fourth Proportional to 2,512.05, 3,770.40 and 1,280.35

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Solution

The fourth proportional to 2,512.05, 3,770.40 and 1,280.35 is: 1,921.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512.05 : 3,770.40 = 1,280.35 : x
  2. Step 2: Convert to fraction form
    2,512.05/3,770.40 = 1,280.35/x
  3. Step 3: Cross multiply
    2,512.05x = 3,770.40 × 1,280.35
  4. Step 4: Simplify right side
    2,512.05x = 4,827,431.64
  5. Step 5: Solve for x
    x = 4,827,431.64/2,512.05
  6. Step 6: Final answer
    x = 1,921.71

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1.5x scale

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.