Home / 3,128.54-4,318.05-2,010.38

Finding the Fourth Proportional to 3,128.54, 4,318.05 and 2,010.38

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Solution

The fourth proportional to 3,128.54, 4,318.05 and 2,010.38 is: 2,774.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.54 : 4,318.05 = 2,010.38 : x
  2. Step 2: Convert to fraction form
    3,128.54/4,318.05 = 2,010.38/x
  3. Step 3: Cross multiply
    3,128.54x = 4,318.05 × 2,010.38
  4. Step 4: Simplify right side
    3,128.54x = 8,680,921.36
  5. Step 5: Solve for x
    x = 8,680,921.36/3,128.54
  6. Step 6: Final answer
    x = 2,774.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.