Home / 3,129.72-4,318.56-2,010.75

Finding the Fourth Proportional to 3,129.72, 4,318.56 and 2,010.75

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Solution

The fourth proportional to 3,129.72, 4,318.56 and 2,010.75 is: 2,774.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.72 : 4,318.56 = 2,010.75 : x
  2. Step 2: Convert to fraction form
    3,129.72/4,318.56 = 2,010.75/x
  3. Step 3: Cross multiply
    3,129.72x = 4,318.56 × 2,010.75
  4. Step 4: Simplify right side
    3,129.72x = 8,683,544.52
  5. Step 5: Solve for x
    x = 8,683,544.52/3,129.72
  6. Step 6: Final answer
    x = 2,774.54

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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.